I think the mask is more to stop droplets.
I wouldn’t say they’re totally worthless, but their effectiveness is probably minimal at best. A lot depends on the mask and how well it fits. The cloth and paper masks most people are wearing don’t fit particularly well, so a fair amount of the air you are inhaling or exhaling is going to bypass the mask. If the mask does happen to trap some germs or viruses, they are now trapped against your face, or your hands can come into contact with them if you adjust or remove your mask. Still, the CDC guy says Wearing a mask could be more important than getting a vaccine. How stupid do they think we are?
yes
but stopping droplets doesnt mean stopping everything
and more so to the point
it wpnt stop you inhaling all the stuff in the air from others
if it can get out that easy it also gets in that easy