Which still create heat be it from the bulbs or from the circuitry and wiring. When you exhaust the slightly warmer air into the room, it's then sucked back into the cab, and it's heated a bit more, which is then exhausted which is then sucked in, a cycle. It does depend on your setup but i'd say open some windows. Physics is physics at the end of the day. With regard to removing odour, that will work.Well I am new I like to learn about removing room odor.I under stand carbon filters help. Do I have to extract the air out of the room or can I circulate the air. I am not to worried about heat because I be using LEDs.What are some of the basic for removing room odor?