My fiance was on a movie set that got hit bad and had to shutdown twice, she was one of the only people not to catch it, and was in very close contact with infected. She always wears a kn95 mask. I know they aren't as great but they have kept us both from getting it so far and these newer ones are comfy enough to wear. I'm already heavily disabled and could easily be screwed so we've been careful and are grateful to not have to deal with long COVID. I have friends who lost wives and were in thier 30s. Every time I'm about to loosen up I see something like this article and m just gonna keep a stock of em. The limited effectiveness has been enough for us so far