Yeah I really despise those things. Ugh, I remember staying in Orlando over the summer with my grandpa... Talk about mosquitoes... my god those things could keep you up for hours.
Furthermore, the ones you hear that "buzzzzz" and annoy you, are the ones that DON\'T bite. Regardless you should kill it, but if you don\'t, don\'t worry about it biting you, however I\'m sure its female friend will.