Well, speaking of health/cleanliness and TSA...in Calgary recently I had a TSA person going through my toiletries, including toothbrushes with 'used' gloves on...pretty gross.
Perhaps now that I think of it...it is prudent to travel with a new toothbrush that is still in its protective packaging.
Make them change their gloves, in front of you. I do it every time they want to rifle through my underwear and shaving kit...any time they want to examine anything of mine. It is within our rights. Some TSAs comply willingly, some get attitude, BUT THEY STILL HAVE TO DO IT.
Just ask them to change their gloves -clearly, the result of NOT doing so is quite a steep price to pay in addition to what we already pay to fly. I really don't want an ecoli infection or Swine flu or scabies or whatever to "enhance" my trip.