I've had two idiot brothers who for whatever reason never did learn how to clean themselves as kittens. If we didn't wash them they started smelling, and the white fur became a nice nicotine yellow.
Years later we got a third cat, a rescue, who actually taught them to clean themselves!

Hah, I didn't know it wasn't. (not english native speaker)
Using that word misses out on the much more fun original name: Acetylsalicylic acid.
yeah, I get why "Aspirin" stuck