This actually has been a repeated topic on the corn snake forum I peruse from time to time. The responses are varied. ( I like incense too.) My OPINION is that as long as its not a closed in room and you don't do it every day, its okay. I have a system where I can open the porch door, which faces north and the kitchen window over the sink directly across from it and get a nice cross draft so there's a lot of air moving. I'm a little more cautious in the winter time when the house is shut up tight like a lock box! And I can't use sandalwood incense because it gives dear hubby migraines.

Devon