The problem is that there isn't a known safe procedure for sterilization. Universities are working on that: https://news.engin.umich.edu/2020/04/engineers-work-

The problem is that there isn't a known safe procedure for sterilization. Universities are working on that: https://news.engin.umich.edu/2020/04/engineers-work-to-decontaminate-n95-masks-for-front-line-medical-personnel/ https://news.engin.umich.edu/2020/04/engineers-work-to-decon...