Yes it will work somewhat it depends on the amount of plants u will have where there arnt pellets the smell will go through so u will still probably smell it but it's a good start it should help u out a little bit. And is ur exhaust powerful enough to pull through that filter?. I'm doin my first I door grow so I'm no expert by any means I'm just tellin u what I've learned from research. Anywhere where they're are no pelleted smell will get through it and also if ur grow space isn't completely sealed besides the intake and exhaust the smell will leak through any cracks