I swear I am not being a pig. Really I'm not.
I met a guy who would print with no shirt on. He decided that the dist was being stirred by and coming off his shirts. He was anally clean in the DR; hepa filter, the whole nine yards. still got dust. Printing topless helped.
I have been told this same thing for loading film holders in the DR, so it can't be that uncommon. Oh Yeah. You have to use lotion before you go in. He lotions up with latex gloves on to avoid getting grease on his fingers. He was kind of an odd duck but since folks load film holders this way, maybe not as odd as I thought.