if nothing else. Nobody knows diddly about whether or not you can give a potentially deadly disease to someone else. We have covered our mouths/noses for centuries to shield each other from sneezes for a reason. (see link, if you possibly don't know)

But now, wearing a mask is a sign of weakness or a political statement or some kind of protest of some kind. Carry on however you see fit, but rightfully expect others to do the same.