Honestly the teacher laughing was enough, literally no one is going to give a fuck after that.
People need to realize that they are not the main character, if you want something embarrassing you did to go away just don’t bring it up. People aren’t jotting down notes to bring up later, they have full lives of their own, no one in college has time to commit this to memory any more than a funny anecdote and they won’t bother to remember who did it.
Counterpoint: I still vividly remember a guy ripping a fart in class more than 20 years ago. Maybe because we've been writing a test and, up until that point, the classroom had been deadly silent before bursting into laughter.
Or maybe because he did it again, a couple of days later.