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by nate_meurer
1594 days ago
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I have seen no evidence that covid can be spread via nasal respiration. Covid spreads through droplets and aerosols. Normal nasal respiration produces no droplets or aerosols, and even a very hard nasal expiration can produce only a few hundred droplets at most, and usually far less. Contrast this to a single sneeze or hard cough which can produce millions of droplets and a cloud of infectious aerosol. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7293495/] I believe evidence supports the role of masks as spit shields. But the whole charade of masking on planes and in restaurants is completely useless, since everybody removes their mask completely for every meal, snack, and drink. |
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