I agree that Dior Homme Sport has a weird note that turns me off, but I'm not quite sure what it is.
I wouldn't call it "sweet". It has more of a "cilantro" or "cigarette smoke on clothing" smell to me. I can't quite explain it, other than it smells like the taste I get in my mouth when I eat food with cilantro in it, or something like watermelon.
I'm assuming it's one of the woody amber aromachemicals. Whatever it is, I can't stand the fragrance because of it.