I have a similar reaction as Basil's to most perfumes-they give me a headache, especially if I'm in a confined space with them for a long time (such as in a car...). I usually have to have a "talk" if a woman I'm dating is wearing a lot of scent, usually I can make a case for getting them to tone it down or eliminate it completely. But, I've also broken up with women after a few dates when they've refused to respect this one, frankly very simple, wish.
The worst, though, is patchouli oil. That stuff doesn't smell nice at all, <span style="font-style: italic">and</span> it's strong. I'd like to meet the genius who managed to convince people that patchouli was an acceptable scent to wear...and punch them in the nose.
-Wm.