I also cannot imagine doing any work in some of those garages. One drip of ATF would be cause for a call to Hazmat.
Some of those guys would freak out if they saw the shop I used to work in all the time. It was especially bad the day I fired up a 4450 John Deere tractor and forgot to hook up the turbo oil feed line. A stream of dirty diesel engine oil about 3/8" in diameter shot straight up, hit the ceiling 20' above and dispersed mainly over my bay. Luckily I got it shut down quickly, but boy what a mess.