82 posted 1 year ago by kb3pxr 1 year ago by kb3pxr +82 / -0 25 comments share 25 comments share save hide report block hide child comments Comments (25) sorted by: top new old worst You're viewing a single comment thread. View all comments, or full comment thread. ▲ 3 ▼ – ilovemyprez 3 points 1 year ago +3 / -0 Since the main idea is to filter out the water droplets in which the Hunan virus floats, which are at about 5 microns, any mask will do a fantastic job. permalink save report block reply
Since the main idea is to filter out the water droplets in which the Hunan virus floats, which are at about 5 microns, any mask will do a fantastic job.