Thanks, that was pretty informative. We have a bunch of one time use standard surgical masks at home. I wonder if I can just put them in a bag of salt after single use.
Or spray with bleach
What if you dip in isopropyl alcohol then dry, sounds safer than bleach and less destructive for the fabric. Bleach is chlorine you would have to wash it afterwards.
Alcohol will destroy the charges that make the fabric effective for small particle sizes, according to the article.
that is the N95 masks made of blown polypropylene, not cloth masks made at home (for example two layers of teatowel is quite an effective filter apparently)