Yesterday, I removed a wall from my basement and tried to vacuum the dust after removing/breaking it. When I used the vacuum, I didn't realize that the filter (not HEPA) was not properly installed and all the drywall dust became airborne. It got really dusty and my air quality monitor reported almost 400 ug/m^3 PM1 and 1,000 ug/m^3 PM2.5. The only PPE I was wearing since I thought it would be a simple removal was an off-brand mask with two P100 filters I bought off amazon.com. I opened the windows and left the vacuum (not HEPA) on to remove the dust in the air, I also turned on the bathroom exhaust. I cleaned the surfaces, mopped the floor and changed the HVAC filter to a FPR10 / MERV13. I did not turned the HVAC yesterday night and slept with a fan.
The house was build in the 50s and I don't know when the basement was constructed. The drywall removed, I believe, is from the US Gypsum Company. I tried to find the any markings to tell me the date or something, but I only found this printed: 11 08 3 BA J 3. Other drywalls in the basement have the marking: 05 28 4 BA R 6 with PAT. NO. 2806811. I believe I removed the first one.
I wonder how bad the exposure was, even with the P100s and if I should do something else. I did wanted to clean the HVAC ducts before turning them on, but my thermostat is Ecobee Smart and turned itself on today because temperatures got higher than 78 degrees. There's a 6in return vent in the basement.