I just saw a post about "If a fart can make it through underwear and a pair of jeans, how can a mask made of cloth save you from covid? Asking for a friend..[sic]" Well, firstly, thank you for the question! As a scientist (specifically a chemist, I am absolutely qualified to 1/9

— Tegan Makal (@MakalMakal) April 24, 2020