Humans Are Smelly: If there were any around, they would be.
But it’s hardly unique to them. All primitive species are: because it’s a consequence of advanced species (and especially those who take their cue from our friendly local aesthetes) investing in both much improved senses of smell plus excellent personal hygiene via biotechnology and nanotechnology. By the time you have skin that dirt literally won’t stick to, sweat that smells of roses and avoids supporting bacterial growth, and even shit that literally doesn’t stink… well, everyone not comparably enhanced is a stinky ape.
Or stinky lizard, stinky slime mold, stinky bunch of tentacles, whatever.
It is, however, considered polite not to point this out. It’s no sin to be primitive. Now, if it’s by choice, on the other hand…