This is so dumb! I thought N95 masks we're the only masks that have been proven to block the particles!!
ANY OTHER FACEWARE IS PURE THEATER
I'm mad now. This will get people killed. N95 masks are the only masks that work against the #Coronavirus, and they're specifically telling people NOT to get them. 
I think you're confusing "blocking some" with "blocking all"
you can't disprove the the former
and you probably can't latter
@realcaseyrollins
you can't disprove the the former
and you probably can't latter
@realcaseyrollins
selective membranes/filters that block somethings but not others are not trivial
@realcaseyrollins