As I returned to the desk after helping a patron, I overheard my coworker's side of the end of a phone conversation. I could tell it was something odd, and when she hung up, she turned to me and said:
This patron is looking for a company in the area that will make perfume from her sweat.
A few quick searches led us to websites talking about perfumes made from bodily fluids (link if you dare). However, we couldn't find any company (local or otherwise) that made custom perfumes, for individuals, from their own sweat.
And after we thought about it, we kind of wonder how much sweat would be needed, and how a person would collect it.