His solution to someone being concerned about being harmed by another person's breath was "you can go home" because "there's plenty of clean air for you to breathe" and "what makes you think it's YOUR air?"
http://tigerboard.com/boards/view.php?message=17368723
http://tigerboard.com/boards/view.php?message=17368923
http://tigerboard.com/boards/view.php?message=17368799