You are indeed correct!I read where somebody posted that if you put Ona in your grow space the smell will be absorbed into the buds and make them taste like Ona. It's not going to neutralize weed odor anyway because Ona is a mixture of terpenes and terpenes is exactly what makes weed smell. Terpenes can neutralize other odor compounds but I don't think they can neutralize other terpenes. It would just be covering the weed smell with Ona smell. Far as I know, the only ways to get rid of terpenes is carbon or oxidation. I wonder what would happen if you passed the air through a bed of those white oxy crystals, calcium percarbonate. Would it oxidize them at all? Probably not but maybe some. Too bad a catalytic converter requires temps of 3-400 degrees C.
I helped my friend get setup, he was not happy with the smell so I brought him som ona gel (I personally use phresh filters for yrs now and never had one fail me) because he did not want the filter. Any who, once we pulled the plants down the smoke was pretty damn good other then the fact that the whole grow ended up tasting exactly like the ona gel. Had to scrap it and start over with a phresh filter, which came out great!