My daughter is on the board of our local preschool. They are trying to figure out how to open next school year. Getting 2 year olds to wear masks is obviously a big deal so they are trying to think up other things to do.
Another approach is to filter the ambient air. Say we have a room that’s 20’x30’x10’ high so 6000 cubic feet. Jet air cleaner ads-1000 moves over 1000cfm so 10 changes per hour. As sold, these things filter to 1 micron.
The actual virus is much smaller but the virus travels in a droplet that should be caught. I have some non-woven polypropylene used in n-95 masks and could are a pre filter from that.
thoughts?