Since I am in the auto industry in the paint shop, the big issue with the goverment is VOC emmissions. We have incenerators and mist eliminators to try to eliminate as much as can be done. I know that the epoxies and the house latex paints are more of a low VOC product and do not require control in that manor. You guys are right on another aspect. The particulate contol will probably be on the EPA's wish list. If that goes through, imagine what the cost of having you house painted will be and the do-it -yourselfer will be gone.
As for that show, that truly sucks!!! I remember in '99, I was at the Olds Club of America meet in Dallas. We just happened to be right beside one of the busy (aren't they all) runways at DFW. Jet fuel getting over everyones cars!!!!
Then the Olds Meet in Denver, everyone was buying old comforters from the hotel for the afternoon rain/hail storms coming over the mountain. I have come to the conclusion that big outdoor shows are difficult to maintain for things that can go wrong with the car.