you keep going on about "sail catches the wind" - 1 - sails are thick and coated to not allow much air to pass though them - hardly the same material as masks. 2 - its a stupid argument - but to be expected - you are dumb as a rock. your memes are about as stupid as any Trump loving RWNJ - after all you keep coming back here to make your pathetic little arguments just to make yourself feel bigger. Go suck a dick - I say that not because there is anything wrong with being gay and/or sucking dicks - but merely because I know full well you RWNJs hate the mere suggestion that you might be gay, then after you have finished sucking said dick dont forget to wipe your mouth on your confederate flag.
Keep copying and pasting - theres a lot of info out there - it still doesnt counter the basic argument that the antimaskers dont make any sense with "doesnt block virus but does block Oxygen" - still wondering how all those different industries that wear masks on a daily basis manage to breath. PS a link from a local dentist's blog is hardly science.
the virus is a factor of 1000 bigger than 02 and Co2 particles - if a mask can stop CO2 then it can also stop the virus. If a cheap home made mask is stopping people from breathing then how do doctors, nurses or people in factories breathe all day with their masks. Go TO school.