We don't confiscate jewelry, but it certainly doesn't make it on the mats. If rings can't come off, or ears are newly pierced, out comes the athletic tape (unless I'm out, then it's gaffer tape).I'm sure students did a lot of things I wouldn't approve of. Just as I did some things my instructors wouldn't approve of. I usually stayed out of their lives unless asked not to by someone of importance. Or if didn't approve of their outside behavior. Then they were entered into a behavioral re-education program.
But the only thing I hated more than a guy who smelt like an ashtray - was a guy who reeked of cologne. Once that cologne smell transfered to my gi, I went and showered and changed. - Then beat the snot out of him. But everyone knew that going in - DO NOT WEAR COLOGNE to the DOJO. Or any bling. Any bling worn with gi was confiscated. If you wore a wedding ring, you taped over it. No exceptions.
I know, couldn't get away with any of that now.
Smelling strongly of anything means you can't practice with others.