• Joe Xie

Debunking the Lie That N95 Respirators Don't Work Against SARS-CoV-2

One of the most consistent lies that I keep seeing being pushed by anti-mask groups is that N95 respirators do nothing to protect someone against SARS-CoV-2 (as well as all viruses and bacteria) because they "only filter down to 0.3 microns" while SARS-CoV-2 is 0.05 microns in diameter.


I will now direct your attention to the following graphs:


Similar to HEPA filters, N95 respirator collection efficiency is lowest in the 0.3 micron size range rated by NIOSH at 95%. Any particulates smaller and larger than 0.3 microns actually experience higher filtration efficiency.


Particles smaller than 0.3 microns do not behave like larger particles due to Brownian motion, and have higher collection efficiency due to this behavior.


By the way, did you know that during the 1918 Spanish flu pandemic, there were also anti-mask groups? I guess this just goes to show you that the more things change in the United States, the more they stay the same.