BS they are DUST MASKS and not even very good at that.
I only wear a KN95 or better to work with silica dust. That’s with a well fitted respirator, not a stupid disposable mask from a package from China. Virus is how much smaller?? Mask mandates were a joke.
So how many people properly disposed of their paper masks after each use?
Agree, dust masks even for sawdust barely work let alone fit properly. At least with sawdust your nose is an effective filter.