I know all about stealth. I did my entire grow that way, I learned alot. Here are my tips. 1st off dude, the carbon scrubber will tampen down the smell, but it wont eliminate it. Pot plants REEK during any time but during bud cycle and harvest, it's eye watering unreal. You gotta exhaust it out a window somehow. I'm just saying. Then once you got your smell going out a window, it's all about the pressure, man. Air pressure. Let's say you are growing in the basement, and you are exhausting from there to the outside. Your air coming into the basement, that goes through your tent and out the vent, has to come from somewhere. This means usually from the 1st floor or higher floor connected to the house, if all doors and windows in the house are shut. Guess where that air is coming from? The unused dryer vent and bathroom vents on the 1st floor, that at that time are not in use. This is all fine until someone in the house turns on a bathroom fan or runs the clothes dryer, or turns on the kitchen vent above the stove - then they are pulling air out of the house at the same time you are. May not sound like a big deal, but if they are pulling air faster than you are, your stink will go under the door and to them. So watch that. This means, and can't stress this enough, you got to leave a window cracked somewhere else in the house so that does not happen to you. Gotta tell you the more I read about your situation the fan noise alone will keep that person up, if the smell doesnt do them in. I have a 4x4. You can't harvest in it, and hang your stuff , and move around, or zip it up from the inside.