my room is about 10x8x8. i was plannin on getting a 6" vortex and leaving it on for 18veg/12flower as needed. the problem is.. where can i direct my ducting. can i leave the door open and just let the air go into the next room? i have 2 crawl spaces on each side, but im worried about letting cold air in, or the neighbors smelling the pot more than they probably will anyways. im on the 2nd floor, so idk if the smell rises in the winter, or what. idk what to do. i dont wanna get a inline fan if im just gonna be recirculating the air into the same room.