17 Gold-standard CO2 monitoring study: Short-term surgical mask usage→inhaled CO2 levels ≥5000ppm in 90% of 10-18yos= UNACCEPTABLE/FORBIDDEN level for workers due to its freq assoc w/ "headache, nausea, drowsiness, rhinitis, & reduced COGNITIVE PERFORMANCE" (twitter.com) posted 2 years ago by axolotl_peyotl 2 years ago by axolotl_peyotl +17 / -0 2 comments share 2 comments share save hide report block hide replies
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