You are weird! Who would drive international fecal particles deeper in their mouth on purpose? Weirdos, that's who!

My Gen-X self says.... whatever...who cares. If they give you looks, let them. Compared to the pure stench I have dealt with on international flights, someone who has a little hygiene is a nice break. But like Richard points out.... EEWWW.. poop particles in the air are gross. I don't even keep my toothbrush in the bathroom at home for that reason. (Again some of the stench of international flights was still very poopy smelling) I'd use water fountains outside the bathroom. but as to how others looked at you... forget them.