I think the issue (although I don't know for sure tbh) is that there is potential damage to the fibers which make it such a good filter. For example, our infec

I think the issue (although I don't know for sure tbh) is that there is potential damage to the fibers which make it such a good filter. For example, our infection control policy is that we are supposed to throw away the N95 if it gets visibly soiled or liquid gets on it per our infection control. I would imagine damage from UV light could also cause issues. The reality is that we all need to have our own individual PAPR systems but we simply don't have the supplies and probably won't for weeks or months so we need to do the best we can with what we have and try to minimize the amount of healthcare workers who get sick and spread it or get taken out of rotation and place a bigger burden on the system.