"Bill Alliston" wrote: (clip) If I let this run in the background in my
shop to get rid of the smell from rancid oil etc. would it build to unsafe
concentrations of ozone. (clip)
^^^^^^^^^^^^^^^^
I don't think so. Ozone is O3, which is unstable. It breaks down into O2
and a free oxygen ion, which combines with the smelly stuff, or with another
oxygen ion, to form O2. Ozone has a characteristic odor, which you can
sometimes smell around sparking electric motors and such. If you start to
notice that odor in your shop, turn off the ozonator and wait a while.