The problem with high-efficiency masks and fit is that the harder it is to breathe through the mask the more you breathe around it. I'm not saying everyone needs to get N95's; that's not for me to say one way or the other. I'm still using 3 layer cotton masks ($5 for 48 masks--you want some?) I'm just giving information for people who feel the need for the highest level of protection--someone immunocompromised for example. Amazon has N95's as low as $1 each for 50 I think from a reputable manufacturer (unless they're counterfeit.)
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