OK, there is also a significant minority of bachurim who don’t take showers. so for some people they want to avoid those people. You can’t have any taanos on them.
I remember the first day of the zman i made up to meet my second seder chavrusa in the yeshivas CR and the first thing he said to me after asking me if i am chacham is if i mind if he goes to take a smoke. I told him I will rather getting started right away. After this minor disagreement he decided he does not want to be my chavrusa and that shoft only lasted one day. (bh i have a chavrusa but i think this guy is still learning by himself)