I'm loving it, shills crying that he put one on, and the AG there bitching he can't come back because he didn't wear one…. you really can't make this shit up.
3 years ago they were not producing medical devices in a clean environment in that plant, they were producing cars in a normal factory environment so apples and oranges there.
This is what I came up with here -
http://atozplastics.com/upload/Literature/Clean-room-environment-for-medical-device-production.asp
so yes, it must be a clean room if they are producing ventilators