A User’s Guide To Masks: What’s Best At Protecting Others (And Yourself) (NPR)

So you want to wear a face mask? Good call. A growing body of evidence supports the idea that wearing face masks in public, even when you feel well, can help curb the spread of the coronavirus — since people can spread the virus even without showing symptoms. That’s the main reason to wear a mask: to protect other people from you. But what kind of mask is best?

https://www.npr.org/sections/goatsandsoda/2020/07/01/880621610/a-users-guide-to-masks-what-s-best-at-protecting-others-and-yourself