Finny always made the most hilarious, horrified faces when he smelled something he thought was too strong. Be it something pungent like garlic, or something bracing like citrus or mint, anything with a strong scent earned his trademark grimace.
Onions were probably his least favorite of all. So when we went out to look at kitties (back when we got Echo and Eisa) and I had oniony hands, I worried the sulfuric scent would drive all the cats away.
Preoccupied with this concern, it was the first thing I mentioned when we arrived. The woman just looked at me. "My cats don't mind," she said - and she was right, nobody in the place could have cared less.
I never did find a fragrance that he liked. He himself usually just smelled like warm fur (very different than Echo, who smells like fresh bread when she is healthy).
Even today, now that Echo and Eisa are very familiar with the way we smell, a new fragrance barely warrants more than a polite sniff. I haven't figured out Truffle's nose prefs yet.
Edited in August to add:
Truffle's ratings of a few perfume oils:
1) jasmine (kept sniffing)
2) frankincense (sniffed a few times)
3) bergamot (sniffed, looked skeptical)
4) lavender (sniffed, pulled back)
5) sweet orange (sniffed, cried out, ran away)