The reason you don't hear about exploding paint booths is because of the regulations paint booths have to abide by. Every wonder why the lights are outside the booth? Most folks haven't actually seen the electric motors but they are shielded (or separated from the air stream) so no sparks are around the explosive vapor. Just because you don't hear about them exploding doesn't mean they wont explode.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.