Carbon filters work through filtering, but ozone generators work by destroying odours! Plugin ozone generators are great for smaller tent setups and the likes of the Uvon Air for bigger setups. These need to be placed outside of your grow room by the extraction outlet.
For ultimate peace of mind, Airzone Ozone generators can be installed in line with your extraction and guarantee that all odours are vaporised into oblivion! Be mindful that ozone is harmful to both plants and us soft tissued humans (!), so you may want to combine your ozone generator with a timer and visit your grow space when it's safe.