I agree with the other posters---If it's really bothersome and disruptive talk to your teacher and I'm sure he/she would do their best to help you out. I'm an extremely hygienic person (I'm a freak about it!) and while I know some people can't help it I just cannot stand people who smell. I'm not talking just a little bit, but there are some people out there who really reek!! I just had someone removed from one of my flights last week because other passengers refused to sit near her. It was really, really bad. Ugh......she smelled AWFUL!!