I've only ever seen baby oil at an amp before. If that was at a massage place they need to put up a warning sign. Even guys without an SO don't want that smell.
I get the economics of it, it's nice that some places care. Many places likely don't or don't know. When your out for thrill of the hunt, don't want to wind up with thrill of the skunk.
Never thought to ask, but now I'll have to pose the question of what oil they use. I don't know if bringing your own oil is like that guy that brings his own pool cue to the bar. Or maybe it will give them some ideas. Time will tell what I do