My old lead petty officer was On the Roosevelt. He said they had a guy give a fresh airman an empty inflated black trash bag with the phrase "A1R" written on the side off to get tested.I think that actually beats newbie Fuels (POL) troops collecting exhaust samples in Mason jars from the refueling trucks. Yes, there were pictures.
Said this kid was walking around the ship most of a morning bouncing from department to department with a bag of A1R sample to get tested.
The fun ran out when some half whit sent him to the XOs office with said bag of A1R sample.