COVID-19 mutations are emerging. Are handmade cloth masks doing enough to protect us? Some European countries are mandating medical style masks like N95 or KN95 masks on public transportation and in stores. Still, aerosol research from 2020 shows cloth masks are just fine as long as they properly filter particles and fit flush with your face. ⚠️ Update, February 11, 2021: On Wednesday, the U.S. Centers for Disease Control (CDC) updated its mask guidance to include recommendations on how to safely wear two masks at once, as well as how to wear a mask with a proper fit, to help quell the spread of COVID-19.