The Trouble with Masks
Viruses are extremely small. The Coronavirus is 0.1 to 0.5 microns in size. In comparison, a human hair is 50 to 180 microns. They are so small that they can go through masks like pollen can go through a chain-link fence. In theory, masks are supposed catch the tiny droplets of moisture that the coronavirus clings to. But for masks to be any effective it has the be the right kind of mask, preferably N95. That automatically rules out cloth masks, which are useless. It has to be fit-tested to be effective. You are not supposed to touch the mask only the loops and nose of the bridge. You are not supposed to reuse the same mask. You shouldn't wear the same mask for too long, otherwise the pores in the mask become blocked by moisture from breathing, and the air stream simply diverts around the mask. Even if you do everything just right there are no guarantees. That's why masks are pretty much useless for the general population. No one ever does any of those things. They are always t...