First post of my GA career for those noticing my handshake status. Question: I see peer reviewed and published evidence that masks do NOT work, but has anyone seen the same saying that they do work? I want to be able to say to my boss that there is no such evidence--I have not found any. You?

Edit: Thanks to everyone for comments and links. Looks like this topic has been discussed in the past (like so many items on this site). I appreciate the input and your patience. Being new, this was good to see.