I live in a condo that has common walls with neighbors. I want to build a room inside of my room. I would use the carbon filters. I am looking to have 12 plants. Would it be possible to mask the smell enough to keep it from being able to smell through walls with these filters. It would vent out of the inside grow room and just into the room. I would run duct for fresh inside air and put a filter on that as well. Thanks for any help or suggestions.

carbon filters work well!

if you have doubts...you can always buy an air/ionizer ozone generator on top of the carbon filter....

the duo will punish any odor(s)!!!