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Voluntarily wore a mask yesterday...
posted ago by BasedProf1776 ago by BasedProf1776 +1347 / -0

Removing ceramic tile from a wall + angle grinder = lots of dust. Small, enclosed space.

N95 worked great, but still let the finest dust through.

Trust the science!

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– CrackerJack2 8 points ago +8 / -0

Open the window and get a fan,
in addition to getting a N95 that fits better.
Yes, COVID-19 is supposedly 125 nanometers (0.125 microns) in size, which is smaller than the 0.300 micron rating of these masks.
The regular cheap disposable surgical masks are basically a joke.

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