Here's what to do if someone coughs or sneezes near you
Sherman said that if you find yourself in a high-risk scenario in which a someone sneezes or coughs near you, “Immediately exhale to avoid inhaling droplets or aerosols. Purse your lips to make the exhaling last longer. Turn your head fully away from the person and begin walking.”
This method won’t definitively protect you from COVID-19, but it could reduce how much of the virus you’re exposed to if the person who coughs or sneezes happens to be contagious.