ok now i am running two 600 watt lights, and i am aircooling them. i am planning on running c02. i am using a dual hose portable AC to help with the cooling. i am exhausting the lights through an extra laundry exhaust since i remodeled my basement and moved the dryer to the other side of the basement. my question is as follows. will the air coming from the air cooled lights contain smell if i am not recirculating the air? i am taking cold air from another area in the basement, pulling through the lights, and exhausting through the dryer vent. should i add a carbon filter to this, or should i have the filter just hanging in the room and recirculating the air that way? thanks a lot people. the more input the better. peashout