Ok, I'm about to grow 2 auto flower plant in a small 4x4x4 grow box in my closet and I am really worried about the smell. So I will be spending money on a carbon filter, but I really don't know anything about it, or how it works. I heard you need an exhaust fan to? I want a set up were the air doesn't get pushed out the room, smelling like weed. I want something that like, makes the air clean and not smelly and I heard a carbon scrubber does this. So I would just like some advice on what all I should buy to make my place not smelly. Example: Brand, Size - Carbon Scrubber Brand of whatever kind of other fans I need Stuff like that. Also, could you please tell me how exaclty I set this up, because I been researching all day and could'nt find anything and would my room smell still smell like weed even with the carbin scrubber, even with only 2 auto flower plants? THIS IS THE ONLY THING I REALLY NEED TO KNOW, BEFORE I START TO GROW MY OWN PLANTS, SO PLEASE ANSWER TO YOUR BEST OF YOUR ABILITY.