Very unusual. Those tube use low voltage. They should never get hot enough to cause a burn.

There is a loophole. Freeze the water. It is then no longer a liquid. Been doing this for several years now with liquid foods.

http://apps.tsa.dhs.gov/mytsa/cib_resul ... =tsadotgov

On mine, the bottom of the tank got a little discolored, but no bad smells.

With all the negativity in regards to DMEs, I'd like to share my experience. I had my polysomnogram done at a Providence facility in Oregon. The DME I used is owned by them. I know many would feel that is a conflict; however, my experience has been mostly positive. First step: Dr. sent referral to D...