thank you for your reply. he wore a kn95 mask. that probably is not as good. I asked him to double it up with the masks but nope. what male listens to a female? this was the bathroom in the downstairs. when I got home my son wanted to conduct experiments with his present so we stayed downstairs since it has a ceramic floor and can easily be cleaned up. now, you have to turn the corner in order to see the bathroom he was working on. he did not turn off the heat so now I feel like we are all inhaling every particle because of our vent system.

last year our friend knocked the wall down in the laundry room. never thought about getting it tested and he acted like it was not a big deal. he removed some installation and never did it pass my mind. husband said we are doomed because of that work if this comes back positive.