Censors in the 90s were obviously MUCH more concerned about portraying the love between two consenting adults who had been married in a previous life than they were about a sentient puddle of goo that can make himself look like he’s dressed.
Hey, I love that they added the effect of his clothes dropping off him the first time he shape-shifts after regaining his shape-shifting abilities.
Technically all he wears is a comm badge.
Yet they didn’t give skintight clothing to the only character who had a good reason to wear it…
Just remember: As a Changeling, Odo has nipples according to the episode “A Simple Investigation” which I rewatched yesterday. You’re welcome.