Everyone loves the smell of gasoline, people!
I don't really know if I like a smell that other people hate, but a friend of mine hates the smell of freshly cut grass and sunwarm skin, both of which I love.
Don't know if it counts, but when my daughter was still small enough to only breastfeed I really didn't mind the smell of her poop. It smelled a bit like sweet milk to me. Now it smells gross though.