Yes you can vent but I also know of many who use A/C and they don't vent at all. Unless they open the door and enter the room.

Now what I would do but they have no problem and their smoke is always frist rate.
Zandor Reviewed by Zandor on . co2 sealed room, only vent lights off? if at all? i have read many post on this topic and have heard all sorts of things from, totally sealed with a dehumidifier to you must vent evry so often throught the day.....i have jus read zandors post and it seems logical although im wondering if my cousins best friends girlfirends sisters gay lover has her room set up ok.... it goes like this propane co2 generator with co2 controller set for 1475ppm totally sealed room at the moment with dehumidifier with bulit in humidistat (holding steady in the Rating: 5