Is it just me or is it sad we have to show graphics of people actually not wearing a mask, and say "this is the wrong way to wear a mask"? We are so screwed . . . Click to expand... I'm pretty sure ...

First, don't get hung up on the 0.1 micron specification. Almost nobody wears a mask in the "right" way such that that filtering level is going to come into play. Particles that small are nearly ...