Co2 Filtering

How effective are carbon filters and how do I know how large to control all of the oder. Do I vent it out of the house or use it as a scrubber and keep the air circulating inside the room. I am also thinking of injecting Co2. how will the filters affect the out come. If I use a scrubber does that get rid of the co2.
Controlling the oder of a 60 plant SOG. I am very concerned about stealth.
Thanks for any advice