Lilyskip, sometimes they'll get there' urates on themselves, their not to worried about impressing anyone,lol. I clean up their poop and urates as soon as i notice, and I check on them everyday. I consider that good husbandry and they still get some icky stuff on them. I keep a spare rubbermaid, stick it in the tub put some water in it and let the snake swim around for a minute, that solves the stinky problem!
I guess its not a concern if you're not handling the animal because it will sluff off or rub off eventually.