A popular warning on social media about the effectiveness of different kinds of face masks states some truths, but includes several false claims.

OSHA recommends surgical masks for dentists and other medical professionals who don’t work in sterile environments, but it doesn’t say how long the masks last.

Masks are part of our new collective normal. But some people who wear glasses have an issue with their glasses fogging up because of their mask.

The bottom line is: your mask should fit snugly against the sides of your face; and if your cloth mask can do that then, Neughebauer says, it offers protection.

As COVID-19 cases surge, experts say a cloth mask may not be sufficient protection.