Nothing special except a respirator. They make disposable paint suits with and without hoods for pretty cheap but i don't use them unless I'm painting something really nasty. The Concept does not leave overspray all over the entire garage. It is pretty much just sweep up afterwards.
Just so you know - There isn't ANYTHING about bodywork that isn't toxic. To anyone reading this, be careful no matter what you are doing. Rust dust, bondo dust, paint fumes, thinner on your hands, it is all bad !!!