Sigh. Here we go again.

Properly wearing a face mask is one facet of a multi-faceted approach for reducing the spread of diseases like Covid-19.

Many people use face masks incorrectly... as described by others here, they wear the mask below their nostrils or on their chin. Or even if someone is wearing a mask properly part of the time, perhaps they go to a club in close proximity to tons of people for a few hours, then carelessly remove the mask to have a snack or a smoke without washing their hands. That's not gonna end well.

There is a very strong CYA tendency on the part of manufacturers of face masks, and rightfully so. Are the mask manufacturers going to say that the masks prevent Covid -- having no idea if you're wearing them properly, or washing your hands, or anything else -- and then be subject to a barrage of lawsuits when "wearers" of those masks contract the disease? Or will they disclaim all responsibility to try to avoid the problem? Ooh, I bet I know what answer they'll choose for their 25 cent masks.

Just because the mask makers are denying responsibility doesn't mean that masks aren't helpful.