a friend and I were talking about COVID precautions and they just sent me this paper which appears to raise concerns about safety and efficacy of wearing masks for COVID - does anyone here know anything about this paper + what conclusions should be drawn from it? I feel like there's probably *something* wrong with it given it very much is the consensus in communities I'm in (that seem to pay lots of attention to the literature) that wearing masks is a good precaution to take against COVID, but I'm not sure how to respond. is there a good analysis of the paper somewhere or anything like that?

ncbi.nlm.nih.gov/pmc/articles/…

#COVID19 #CovidIsNotOver #WearAMask #covid

Possible toxicity of chronic carbon dioxide exposure associated with face mask use, particularly in pregnant women, children and adolescents – A scoping review

During the SARS-CoV-2-pandemic, face masks have become one of the most important ubiquitous factors affecting human breathing. It increases the resistance and dead space volume leading to a re-breathing of CO[2] .

^{PubMed Central (PMC)}