Alan,
I could not have put that any better.
I remember growing up in the early 70's and hair-dressers salons used to be full of these things (hair-dryers, I mean) and oddly enough, there were always women under them, unless the shop was closed of course.
You talk of ammonia?, over here whenever ammonia gets out these days, people with chemical suits and breathing apparatus are required to work with it.
Having said that, I once did a retro-fit job in a salon, while it was still being used, if the smell from the noxious cloud of chemicals up near the ceiling didn't make me ill, it was the thought of 6-7 women watching me, to see if I dared slip with the auger bit I was using to drill up through the ceiling.
And of course, I was severely out-numbered, walking out of there WITHOUT at least cleaning up the mess I'd made, with a vacuum cleaner, was not an option at all!
I did it to de-bunk at least ONE male stereo-type, in a rather tough crowd.
