I don't know what PM is. Definitely looks like mold, white hairs, kinda furry (and this is naked eye so we're not talking trichromes). I'll fiddle with my camera in the morning, see if it can get me a closer look. If not I'll just take it back and see if they have a scope.

Yeah, I'm not pissed about it, but I will be if they don't give a refund or exchange. These things happen. I might be more upset if I had respiratory or immune system problems, but I don't.