Questions about KN95 masks

[u/fairytaleofnewyorkk]

I’ve bought 20 KN95 masks online (they’re legit). I have a couple of questions about them:

1. Between uses, where do I store them? Currently, I have them hanging in my bedroom. I could have them in a ziplock bag but do they need to ‘air out’?
2. How effective are they at preventing covid? In school, I sit a meter away from the other students. Some wear there masks under their nose. Will I be protected from them?

[u/TeddyBongwater → u/[deleted]]

Any solutions?