Okay, this is going to sound a little
Okay, this is going to sound a little silly... but you all smell. Every last one of you, and I can't stand it.
How do you not notice? I'll be talking to one of you, and suddenly I'll notice you have the most godawful breath. Do any of you brush your teeth any more, or is it just me? Even worse are those who don't seem to shower. Ever. Like you, chemistry girl. You sit your fat ass beside me and damned if it isn't a titanic effort to avoid being sick all over the floor.
In short: please, everybody. Observe basic hygiene.