The Musician has always been very sensitive to smells. For the longest time she couldn't even walk down the shampoo aisle or the laundry detergent aisle without getting ill, and of course she is very sensitive to what kind of shampoo and soap she uses, and what kind her sister uses since they share a bathroom. She once threw up when my sister with no sense of boundaries forced smelly hand lotion on her (one of the reasons I don't speak to my sister much.)
She must get it from me, because while house hunting I have been frustrated with how badly some of these houses smell to me because of some kind of air freshener or cleaner. As we were driving away from the last house we looked at, I remarked to Mr. BTEG how badly it smelled and he replied that he hadn't really noticed anything. So perhaps I am extra sensitive, but I would think a person would be careful about that sort of thing when trying to interest a prospective buyer or renter in a property. Easier said than done if you are not sensitive to it, I guess. Oh, and don't leave the dustpan on the stove. That squicked me out as well.