Your N95 mask could endanger others during this COVID-19 pandemic. N95 respirator masks are personal protective equipment that is used to protect the wearer from airborne particles and from liquid contaminating the face. Health care workers use two kinds of N95 masks — surgical respirators (for working in a sterile field) and N95 respirators without valves. N95 masks with valves are not safe and let germs escape.
For more information on Why your N95 mask could endanger others, please check out the SF Gate link below.
https://www.sfgate.com/living-in-sf/article/Why-your-N95-mask-could-endanger-others-15246318.php