While I am still waiting to hear from markass on 2 ways to effectively control the odor, this is the ONLY way I have ever found to fully address the odor issue.

ALL OTHER MEANS HAVE FAILED AND WILL FAIL.

Now if your weed is shit or badweed shit, then maybe all you will need is a ionizer. But even those suck ass. If you gonna grow, and grow good stuff, this or some other version of carbon scrubbing is the only way to remove the terpene from the grow room.

And this wont keep the grow room free of the smell, but it will remove the smell from the air the filter intakes...to be cleanly vented elsewhere.