Bullheaded wife/Covid

Non-sick people wearing masks is part of the panic.

A sick person wearing a mask helps protect me from them.
(but they shouldn't even be out in public anyway)

Me wearing a mask basically does nothing.

Not terribly difficult to understand.
I understand what you are saying and have read it several places too. But my spider sense tells me any barrier, even a bandana, over the nose and mouth can't hurt and may help. Anyway, my wife went to work today without a mask. As she left, she said 'someone has to take care of the old folks'.