Interesting thread, VM! There are two categories of fragrances that make me feel ill:
1. Certain strongly aldehydic perfumes, like Chanel Nos. 5 & 22, Creed Fleurissimo, and Malle Iris Poudre. I suppose if I stuck with them, maybe they'd be OK, but I just can't get past the openings.
2. Very sweet florals. I recently tried Drole de Rose and Lipstick Rose, and they made me feel nauseated. Not sure if it's the ultra-sweet violets (I love violets, usually!), the berry notes, or what. The very sweet Missoni also upset my tummy, but I'm going to try it again. It sounds so delicious on paper!