I agree with Al and jwalker to avoid using this and it comes from a bit of a painful experience. Back when I started trying to design cave-specific humidifiers I had a nephew that manufactures miniature bi-polar ionizers that were more effective and less toxic than ozone generators and didn't generate the "smell". Their company sells them for hand sanitizers, mold control in homes, and many other commercial and residential uses. They're fantastic: smaller than a pack of cigarettes and will kill growing surface mold. I spent a lot of time designing the humidifiers with the ionizer built in only to find out (after learning a bunch from this forum about bacterial washing and beneficial surface mold) you want to control mold, not kill the good with the bad. Thanks to the advice I got here (and after doing a through cleaning) my fridge has a very hospitable environment for "good" mold and bacteria without ozone or ion generators. For odor control you can't beat Arm & Hammer (baking soda).