Never painted in a booth there either. Painted in an open air shop. Had good ventilation and very good masks, but never used a booth. Surprisingly dust contamination was never a big issue. Scuff and buff would take care of most anything. I do remember a bug flying into a panel one time and crawling through the wet clear and ruining it. Isolated incident though.
View attachment 391421
View attachment 391419
The guy who I used to work with has done auto body his whole life, only retired from full time work about 5 years ago. He still does some work very selectively. He didn't usually wear a mask for primer, only wore a N95-type for color coats, but he wore a full N100 with organic vapor filters for clear. Clear coat is very nasty stuff.