Uvonair CD-1200 ozone generator 

The Uvonair CD-1200 ozone generator is one of the big boys! Intended for rooms up to 100,000 cubic feet, it will treat all odors being exhausted by an 12" (30cm) ventilation system under most circumstances. 

The Uvonair CD-1200 is a high output Corona Discharge generator that produces high levels of ozone. It is adjustable to match the ozone demand load for odor control as well as provide energy conservation in low demand periods.

Ozone safely alters the molecular structure of offensive micro-organisms, to eliminate smells from plants, pets, cooking, and smoke. It also kills mold, mildew and bacteria!

Set the adjustable output by monitoring the exhaustable output by monitoring the exhaust air for odors. The Uvonair CD-1200 ozone generator is maintenance free!

More info from the Manufacturer (PDF format - Lots of detail.)