Just remember: As a Changeling, Odo has nipples according to the episode “A Simple Investigation” which I rewatched yesterday. You’re welcome.

That’s nothing, Porthos is naked the whole time, and sometimes he gets fed cheese while lying naked on Archer’s lap. Ugh.

Yet they didn’t give skintight clothing to the only character who had a good reason to wear it…

Hey, he had clothes on for the better part of a year.

Until that day he just left them lying on the Promenade and flew around the station.