Fait de 2006: Le #masque #N95 pendant les activités entraîne une dyspnée, une tachycardie et des tremblements. Le responsable est la réinspiration de CO2 à partir de l'espace mort du masque (ETCO2 de base 39 mmHg, après 30 min de masque N95 >47 mmHg). https://t.co/Bq5nPDiILZ
Carbon dioxide re-breathing with close fitting face respirator masks.
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Jul 2020 – Sep 2025Where it's discussed
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X / Twitter85 posts
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YouTube2 videos
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News2 articles
AI synopsis
What people are saying
The overall tone is largely dismissive, with many posters asserting that prior studies from 2006 and 2008 demonstrate masks' harms, using words like 'useless' and 'harmful,' which reflect strong disagreement and skepticism. The tone and context imply a contentious debate with limited constructive engagement but notable influence within certain circles promoting alternative viewpoints.
Most discussions strongly oppose the publication, citing studies from 2006 and 2008 that allegedly prove masks cause CO2 re-breathing and are harmful, reflecting widespread disagreement.
While many posts dismiss the article, some show moderate interest by sharing historical studies and scientific references, indicating a baseline engagement.
Several comments critique or dismiss the publication without deep analysis, whereas others reference specific studies, suggesting limited but uneven engagement.
The tone suggests the discussions have minimal real-world impact, mainly fueling controversy and skepticism rather than influencing policy or scientific consensus.
Abstract in brief
- The text explains how wearing close-fitting face respirator masks can cause individuals to re-breathe their own carbon dioxide, which might lead to health concerns.
- It discusses the mechanisms behind CO2 build-up during mask use and how the design of the mask can influence the amount of rebreathing.
- The article emphasizes the importance of proper mask design and usage practices to minimize the risk of CO2 rebreathing and ensure safety during mask wear.]
Top posts
Most liked on X and Bluesky@kjh_mov @DrPuerner @Hei_Voe Bei Anästhesisten mit N95-Masken (Endtidales CO2 in der Ausatemluft) und bei Chirurgen mit OP-Masken (transkutanes CO2 im Blut) hat man einen Anstieg der CO2-Konzentration im Körper feststellen können. https://t.co/mdDOgUBCgw und https://t.co/bwCUziSO7r
@martinmoline @Gus_Noriega @nytimes Como usted quiera... De más está decir que esta gente es adulta y por lo tanto el volumen de sangre es muy superior. https://t.co/uv35ipWSXL
@RA_PURA2014 なお、締め切った車でも内規循環ではCO2上昇により頭痛や眠気につながるそうですのでお気をつけください。 布マスクでもCO2濃度上昇が確認されます。 https://t.co/HkKT9no2Jd https://t.co/qEW4VLzqaC
Already 2006 fact: N95 #mask use during work activities leads to dyspnoea, tachycardia and tremor. The symptoms attribute to the increase in CO2 due to rebreathing of the gas from mask deadspace (ETCO2 baseline 39mmHg, after 30 min N95 mask >47 mmHg). https://t.co/Bq5nPDiILZ
@kylew978 @HighImpactFlix @farrelb8 Pharma dupes don't read. NO infectious "virus" exists (per CDC!) + PRE-covidiot mask studies = useless & harmful Swedes tossed 'em for unscrubbed OR personnel 2010! https://t.co/gdFK0uhDcX 2006 Re-breathing CO2: https://t.co/umLkklHWEn + 2008 surgical: https://t.co/W5qwG9aLAK
All mentions
Mask Effectiveness: Insights from Political Commentary and Studies
Effectiveness of Quarantine Measures in SARS-CoV-2 Prevention
This video analyzes a study on the effectiveness of public health measures during SARS-CoV-2 transmission among U.S. Marine recruits. With 1,848 recruits involved, the research highlights transmission clusters that…
@ShaunaLeva @phisherm4n @seeby Here are a few: https://t.co/4KFTkzWeTK https://t.co/WCD38zf1Qx https://t.co/FBR3vuSH73 https://t.co/qw8qygFuO0 https://t.co/Wj7OLyf5B1 Here's a meta-analysis that was retracted by the journal (authors didn't agree). https://t.co/dmXV1MSoup
RT @ReginaAustralis: @kylew978 @HighImpactFlix @farrelb8 Pharma dupes don't read. NO infectious "virus" exists (per CDC!) + PRE-covidiot ma…
@taaagm_ @allfadirluis Hypercapnia: Fletcher, S. J., Clark, M., & Stanley, P. J. (2006). Carbon dioxide re-breathing with close fitting face respirator masks. Anaesthesia, 61(9), 910. https://t.co/IUhHZN1vVd
@PTLauren1 @xrayleak @RickABright At least Mr not-so Bright is paid to be stupid, i.e. Rockefeller CEO!
@ReeeeeAllie7 @PsychRNMK @RickABright No one's that stupid unless paid to be, i.e. Rockefeller CEO!
@Kobetreee @Cernunnos88 @FridaGhitis Masks in OR never for "v!ruses"
RT @AnteMedicus: Fait de 2006: Le #masque #N95 pendant les activités entraîne une dyspnée, une tachycardie et des tremblements. Le respons…
RT @AnteMedicus: Fait de 2006: Le #masque #N95 pendant les activités entraîne une dyspnée, une tachycardie et des tremblements. Le respons…
RT @AnteMedicus: Fait de 2006: Le #masque #N95 pendant les activités entraîne une dyspnée, une tachycardie et des tremblements. Le respons…
RT @AnteMedicus: Fait de 2006: Le #masque #N95 pendant les activités entraîne une dyspnée, une tachycardie et des tremblements. Le respons…
RT @AnteMedicus: Fait de 2006: Le #masque #N95 pendant les activités entraîne une dyspnée, une tachycardie et des tremblements. Le respons…
RT @AnteMedicus: Fait de 2006: Le #masque #N95 pendant les activités entraîne une dyspnée, une tachycardie et des tremblements. Le respons…
RT @AnteMedicus: Fait de 2006: Le #masque #N95 pendant les activités entraîne une dyspnée, une tachycardie et des tremblements. Le respons…
RT @AnteMedicus: Fait de 2006: Le #masque #N95 pendant les activités entraîne une dyspnée, une tachycardie et des tremblements. Le respons…
RT @AnteMedicus: Fait de 2006: Le #masque #N95 pendant les activités entraîne une dyspnée, une tachycardie et des tremblements. Le respons…
Encore une depuis 2016 pour les anesthesistes https://t.co/5TD2uqWyRi
RT @AnteMedicus: Fait de 2006: Le #masque #N95 pendant les activités entraîne une dyspnée, une tachycardie et des tremblements. Le respons…
RT @AnteMedicus: Fait de 2006: Le #masque #N95 pendant les activités entraîne une dyspnée, une tachycardie et des tremblements. Le respons…
RT @AnteMedicus: Fait de 2006: Le #masque #N95 pendant les activités entraîne une dyspnée, une tachycardie et des tremblements. Le respons…
Fait de 2006: Le #masque #N95 pendant les activités entraîne une dyspnée, une tachycardie et des tremblements. Le responsable est la réinspiration de CO2 à partir de l'espace mort du masque (ETCO2 de base 39 mmHg, après 30 min de masque N95 >47 mmHg). https://t.co/Bq5nPDiILZ
RT @AnteMedicus: Already 2006 fact: N95 #mask use during work activities leads to dyspnoea, tachycardia and tremor. The symptoms attribute…
Already 2006 fact: N95 #mask use during work activities leads to dyspnoea, tachycardia and tremor. The symptoms attribute to the increase in CO2 due to rebreathing of the gas from mask deadspace (ETCO2 baseline 39mmHg, after 30 min N95 mask >47 mmHg). https://t.co/Bq5nPDiILZ
@TDruer @RightsOfCanada https://t.co/bGOiICBXgq https://t.co/InjZsSMFQN
@NGSTalks https://t.co/n0U7aEIQhr https://t.co/vishhIeof1 https://t.co/DvuOguWrPT
@Chrisness @Suzannah345
@suemidd58863059 @SyltCrew @lorrain00414525 PRE-"covid" medical mask studies = useless & harmful: Swedes tossed 'em for unscrubbed OR personnel in 2010! https://t.co/gdFK0uhDcX + 2006 Rebreathing CO2 https://t.co/umLkklHWEn + 2008 Surgical: https://t.co/W5qwG9aLAK
@Shaostoul @BarryJWoods @TheCoronaCure_ No "pathogenic virus" exists to begin with + PRE-"covid" medical mask studies proved masks useless & harmful! Swedes tossed 'em for unscrubbed OR personnel in 2010! https://t.co/gdFK0uhDcX + 2006 Rebreathing CO2 https://t.co/umLkklHWEn + 2008 Surgical: https://t.co/W5qwG9aLAK
@MisterPimUSA @OHdeptofhealth N.B. how PRE-"covid" medical mask studies already proved masks useless & harmful! Swedes tossed 'em for unscrubbed OR personnel in 2010! https://t.co/gdFK0uhDcX + 2006 Rebreathing CO2 https://t.co/umLkklHWEn + 2008 Surgical: https://t.co/W5qwG9aLAK
RT @Gen05761427: @AngelosPantone @KathySm59005579 @Double_O_Sebun @98Jabjab @EarthsAngel555 @CarronMrs @Tom64156280 @Alp_Trader @xrptlrsem…
@AngelosPantone @KathySm59005579 @Double_O_Sebun @98Jabjab @EarthsAngel555 @CarronMrs @Tom64156280 @Alp_Trader @xrptlrsem @seven7ins PRE-"covid" medical mask studies already proved masks useless & harmful! Swedes tossed 'em for unscrubbed OR personnel in 2010! https://t.co/gdFK0uhDcX + 2006 Rebreathing CO2 https://t.co/umLkklHWEn + 2008 Surgical: https://t.co/W5qwG9aLAK
@ChelseaLum1984 Total bollocks, of course!
@immigrish @JoeGrowling @GraWitMik @Sandyboots2020 @educationgovuk @nadhimzahawi A selection of studies suggesting harms, when worn propery. But let’s be realistic about how most kids wear masks; same mask day after day in and out of pockets, likey with lots of contamination. Not https://t.co/PkuErDVes5 https://t.co/4w8aBCE5bz https://t.co/VllZivi9aZ
@RadCentrism @sloppyjoehotdog @justthefacts85 Since you are showing me an anecdotal two minute test, i would present this too. https://t.co/0o1zbRe8Jt
@Ariela_Lupi88 @ScottC20012 @ACLakeMD https://t.co/0yC95V0uDD
@jordantinney @Fraserhealth @CityofSurrey @whiterockcity https://t.co/p9BHS0JbxE Please educate yourself.
@TheRealRhllor @profkhaledbasim @sapphireLena @Jusrangers @NYC_stateofmind Really! Funny how PRE-Covidiot studies for Drs etc. in OR + "official" admission found masks useless & harmful, e.g. 2006: "CO2 re-breathing..." https://t.co/umLkklHWEn + 2008: https://t.co/W5qwG9aLAK
@katieappleseed7 @mandybu23626477 @Wulf_9 Yep & funny how PRE-Covidiot studies for Drs etc. + "official" admission found masks useless & harmful, e.g. 2006: "CO2 re-breathing..." https://t.co/umLkklHWEn + 2008: https://t.co/W5qwG9aLAK
@smtravis @jhaskinscabrera @critica18495985 Re masks: e.g. 2006 https://t.co/umLkklHWEn & 2008 https://t.co/W5qwG9aLAK https://t.co/Ep6OFvJhOL
@PencilBloke @steve50064821 @DaphneRomneyQC The science clearly demonstrates that face masks cause carbon dioxide rebreathing and hypercapnia [R] Fletcher, S. J., M. Clark, and P. J. Stanley. 2006. “Carbon Dioxide Re-Breathing with Close Fitting Face Respirator Masks.” Anaesthesia 61 (9): 910. https://t.co/QaHzeVLdrB
@OnMyJackJones @MoneyIsFlesh1 @MrsLesleyKemp I’ve gotten the same backlash even with a medical exemption. https://t.co/Hx1kNneR09 https://t.co/5dkhb4O2g5 https://t.co/lmdeBDNGeV https://t.co/SfNpWEV2cY https://t.co/tMwLqLXuQl https://t.co/3vaOyDIuHw https://t.co/jkMrFXwTtx
RT @125OHD: @Oliver_I_ @DickeFaxen @manuelaforster Das ist aus ner medizinischen Doktorarbeit an Chirurgen gemessen. Hier auch noch bei Anä…
@GinoSars j ai des papiers 2 relatives hypercapnie https://t.co/gjE0z2jDJO
RT @federicolois: @martinmoline @Gus_Noriega @nytimes Como usted quiera... De más está decir que esta gente es adulta y por lo tanto el vol…
@martinmoline @Gus_Noriega @nytimes Como usted quiera... De más está decir que esta gente es adulta y por lo tanto el volumen de sangre es muy superior. https://t.co/uv35ipWSXL
@Chris__Hagan @CindyB_2018 @aaronmmccoy @pastorjgkell You don’t know what you’re talking about. https://t.co/8daHGBBYht https://t.co/DKj8J827YM https://t.co/oTMeulICsJ https://t.co/NcUJZxCmNN https://t.co/SYKBaNzago https://t.co/e6YkejrSIb https://t.co/7vAjyXe5qk
@MichalSzulist @TeryAsic1 @JacekWilkPL The respiratory response to hypercapnia is an increase in minute ventilation, giving rise to the sensation of dyspnoea https://t.co/j9g4NqflOQ
@Medscape Ignores hypercapnia, likely even a worse problem among asthmatics than among the subjects of this study: https://t.co/dJbF57T4Fs
@TifoTifoso @Wojtek600 @MartaStruczews1 @jab_artur https://t.co/j9g4NqflOQ
@CJBowden1 @ddeplora2 @thesuperfluous1 @drdagly @CRG_CRM & Pharma dupes don't read. NO infectious "virus" exists (per CDC!) + PRE-covidiot mask studies = useless & harmful Swedes tossed 'em for unscrubbed OR personnel 2010! https://t.co/gdFK0uhDcX 2006 Re-breathing CO2: https://t.co/umLkklHWEn + 2008 Surgical: https://t.co/W5qwG9aLAK
@kylew978 @HighImpactFlix @farrelb8 Pharma dupes don't read. NO infectious "virus" exists (per CDC!) + PRE-covidiot mask studies = useless & harmful Swedes tossed 'em for unscrubbed OR personnel 2010! https://t.co/gdFK0uhDcX 2006 Re-breathing CO2: https://t.co/umLkklHWEn + 2008 surgical: https://t.co/W5qwG9aLAK
@tay7171 @KristenMeghan @kayleighmcenany https://t.co/j9g4NqflOQ
@FirenzeMike Pharma-Med shills can't read! NO "contagious virus" exists (per CDC!) + PRE-covidiot mask studies = useless & harmful Tossed by Swedes for unscrubbed OR personnel 2010! https://t.co/gdFK0uhDcX 2006 Rebreathing CO2: https://t.co/umLkklHWEn + 2008: Surgical https://t.co/W5qwG9aLAK https://t.co/uPdSfNzJYf
@DrKenRemy1 @WUSTLmed ⚠️Pharma shill
RT @Gen05761427: @Nurse__Jenny @jeremyfaust Dr Dumb & Nurse Dumber never read PRE-covidiot medical mask studies = useless & harmful: Swedes…
@Nurse__Jenny @jeremyfaust Dr Dumb & Nurse Dumber never read PRE-covidiot medical mask studies = useless & harmful: Swedes tossed 'em for unscrubbed OR personnel 2010! https://t.co/gdFK0uhDcX 2006 Rebreathing CO2: https://t.co/umLkklHWEn + 2008: Surgical https://t.co/W5qwG9aLAK https://t.co/lKNYl3YY64 https://t.co/o8yjNzm4Lv
@jeremyfaust Pharma-Med shills don't follow any REAL science, eh? Like PRE-covidiot medical mask studies: Swedes tossed 'em for unscrubbed OR personnel 2010! https://t.co/gdFK0uhDcX 2006 Rebreathing CO2 https://t.co/umLkklHWEn https://t.co/W5qwG9aLAK + 2008: Surgical https://t.co/lKNYl3YY64 https://t.co/Pi5GYLjG5T
@3GNole1 @jaskline2007 @RealBillOakley https://t.co/JPkFPXSChZ
@gnrlgrevious @RobHarris90 @_okayshane @aginnt @BallouxFrancois https://t.co/j9g4NqflOQ
RT @jinpeiishii: @RA_PURA2014 なお、締め切った車でも内規循環ではCO2上昇により頭痛や眠気につながるそうですのでお気をつけください。 布マスクでもCO2濃度上昇が確認されます。 https://t.co/HkKT9no2Jd https://t.…
RT @jinpeiishii: @RA_PURA2014 なお、締め切った車でも内規循環ではCO2上昇により頭痛や眠気につながるそうですのでお気をつけください。 布マスクでもCO2濃度上昇が確認されます。 https://t.co/HkKT9no2Jd https://t.…
RT @jinpeiishii: @RA_PURA2014 なお、締め切った車でも内規循環ではCO2上昇により頭痛や眠気につながるそうですのでお気をつけください。 布マスクでもCO2濃度上昇が確認されます。 https://t.co/HkKT9no2Jd https://t.…
RT @jinpeiishii: @RA_PURA2014 なお、締め切った車でも内規循環ではCO2上昇により頭痛や眠気につながるそうですのでお気をつけください。 布マスクでもCO2濃度上昇が確認されます。 https://t.co/HkKT9no2Jd https://t.…
RT @jinpeiishii: @RA_PURA2014 なお、締め切った車でも内規循環ではCO2上昇により頭痛や眠気につながるそうですのでお気をつけください。 布マスクでもCO2濃度上昇が確認されます。 https://t.co/HkKT9no2Jd https://t.…
RT @jinpeiishii: @RA_PURA2014 なお、締め切った車でも内規循環ではCO2上昇により頭痛や眠気につながるそうですのでお気をつけください。 布マスクでもCO2濃度上昇が確認されます。 https://t.co/HkKT9no2Jd https://t.…
@RA_PURA2014 なお、締め切った車でも内規循環ではCO2上昇により頭痛や眠気につながるそうですのでお気をつけください。 布マスクでもCO2濃度上昇が確認されます。 https://t.co/HkKT9no2Jd https://t.co/qEW4VLzqaC
@niun @RegSprecher @Die_Diktatur @BMG_Bund Das ist Ihre freie Meinung. Ich erachte es als Falsch zu behaupten schadet nicht. Ihre Wahl https://t.co/Un3HUvRIw6 Oder https://t.co/3LpCekpoV8 Oder https://t.co/wEvWHHausB
@cyberdoc60 @DrPuerner @Karl_Lauterbach Nein https://t.co/XmKOihG7ej
RT @125OHD: @kjh_mov @DrPuerner @Hei_Voe Bei Anästhesisten mit N95-Masken (Endtidales CO2 in der Ausatemluft) und bei Chirurgen mit OP-Mask…
@evilnode @reopenpa @kyleforUS @GovernorTomWolf skin problems caused by survical https://t.co/M1dvHQLQFR infection higher with cloth masks https://t.co/sfGYuZOsnH https://t.co/Z1T5tUP1YN? https://t.co/83ORjsJQ2z https://t.co/4MPniJEQo4 https://t.co/jwpbhixYaA https://t.co/GrsgHRdDSa https://t.co/I4wUCWDG8W
RT @125OHD: @kjh_mov @DrPuerner @Hei_Voe Bei Anästhesisten mit N95-Masken (Endtidales CO2 in der Ausatemluft) und bei Chirurgen mit OP-Mask…
RT @125OHD: @kjh_mov @DrPuerner @Hei_Voe Bei Anästhesisten mit N95-Masken (Endtidales CO2 in der Ausatemluft) und bei Chirurgen mit OP-Mask…
RT @125OHD: @kjh_mov @DrPuerner @Hei_Voe Bei Anästhesisten mit N95-Masken (Endtidales CO2 in der Ausatemluft) und bei Chirurgen mit OP-Mask…
RT @125OHD: @kjh_mov @DrPuerner @Hei_Voe Bei Anästhesisten mit N95-Masken (Endtidales CO2 in der Ausatemluft) und bei Chirurgen mit OP-Mask…
RT @125OHD: @kjh_mov @DrPuerner @Hei_Voe Bei Anästhesisten mit N95-Masken (Endtidales CO2 in der Ausatemluft) und bei Chirurgen mit OP-Mask…
RT @125OHD: @kjh_mov @DrPuerner @Hei_Voe Bei Anästhesisten mit N95-Masken (Endtidales CO2 in der Ausatemluft) und bei Chirurgen mit OP-Mask…
RT @125OHD: @kjh_mov @DrPuerner @Hei_Voe Bei Anästhesisten mit N95-Masken (Endtidales CO2 in der Ausatemluft) und bei Chirurgen mit OP-Mask…
@kjh_mov @DrPuerner @Hei_Voe Bei Anästhesisten mit N95-Masken (Endtidales CO2 in der Ausatemluft) und bei Chirurgen mit OP-Masken (transkutanes CO2 im Blut) hat man einen Anstieg der CO2-Konzentration im Körper feststellen können. https://t.co/mdDOgUBCgw und https://t.co/bwCUziSO7r
RT @125OHD: @Oliver_I_ @DickeFaxen @manuelaforster Das ist aus ner medizinischen Doktorarbeit an Chirurgen gemessen. Hier auch noch bei Anä…
@jayDill58214921 @dj_groove12 @tekkysuicide @SarahCo30840900 @jamesacook991 @KristianBata @SafwanChoudhry @WestJet Found this: https://t.co/mdDOgUBCgw
@krebiozen @GeoffSchuler @NixTc @natedoromal @latimeralder @JaneEOpie @ianfmusgrave @Monstercoyliar @100Dianne @kfunk937 @jkellyca @immunotoxPhD @TandT_SEO @doritmi @LesleyStock5 @ChristRescues @crabb_vicki @Death_is_final @FrankDElia7 @TheFrankmanMN @weaponizedword1 @ChrisJohnsonMD @KStateTurk @SMcwoof @PatriotBee78 @BGLTHMND @qtbeauty @RisetteMD @drewawerd1 @jandretta81 @TeddyFreddy11 @chaoticsx2 @djrazorgirl @KatLaRue7 @Rosewind2007 @cappsie @TruthTwt @microRNApro @LaLaRueFrench75 @WendyOrent @kidoctr @TinFoilAwards @mcfunny @LG28640297 @anniecherokee @AuriaZepherine @Flying_Shadowz @LightControl2 @Takethatdoctors @Caffeine_Sam Here Kreb; read these. 1) https://t.co/pPhbRuAdP9 2) https://t.co/FsZVHknDXv
RT @Gen05761427: @FrankelPhineus @JonahofNinevah
@FrankelPhineus @JonahofNinevah
@FSarahxlizx Non sequitur much?
@DrsuzanneH https://t.co/FEKLd66uhr
@LeighHartley @NYGovCuomo https://t.co/UlwcL5aUS6
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