Anyone used ONA gel to "neutralize" odors in their grow room? I'm wondering where exactly to put the container. Some say don't put it in the grow room because it might alter the scent of the final plant product. I am also using a carbon filter but it doesn't work well. I think the fan is drawing air through it too fast. My cabinet is about 3'x3'x6'. 120CFM exhaust. Any thoughts? Thanks.