For all the cynical comments here, 3M has published guidance on sanitizing and disinfecting half and full facepiece respirators: https://multimedia.3m.com/mws/

For all the cynical comments here, 3M has published guidance on sanitizing and disinfecting half and full facepiece respirators: https://multimedia.3m.com/mws/media/1793959O/cleaning-and-disinfecting-3m-reusable-respirators-following-potential-exposure-to-coronaviruses.pdf https://multimedia.3m.com/mws/media/1793959O/cleaning-and-di... Note that TCID and some other specialty treatment centers (TCID solely treats TB I believe) have been doing this for a while (although not necessarily with 3M masks). Source: https://www.ncbi.nlm.nih.gov/books/NBK540078/ https://www.ncbi.nlm.nih.gov/books/NBK540078/