Bat-Mask Protocols by David Warren
I recommend everyone go to David Warren's website and read his latest on wearing a mask to protect yourself. It turns out masks are highly effective for our safety... just not in the way you may think.
I carry one around, in the back pocket of my trousers. It has served me for several weeks now. A kindly friend gave it to me. I take it out whenever I must enter a store, or other place that might have people in it. In obedience to the latest nanny-state law, I put it on. This is to keep everybody happy. I realize it is useless against a virus, but I’m trying to avoid getting beaten up. That, I think, is the only thing it’s good for.