Not only can ozone be bad for your health, and can be bad for plants. I too rent an apartment for my op. I thought is was perfect because the landlord lives out of state, but turns out the handyman is a retired cop who doesn't understand the concept of calling before showing up. Talk about paranoid. Luckily my mother is an aroma-therapist and turned me on to essential oil diffusers. I use the pure unadulterated essential oil of peppermint. Its very strong, helps with sinus problems, and its a great insect repellant. I keep the diffuser in the exterior of the room, for i run a closed exhaust system through a carbon filter and am able to recycle my Co2.

Peace