I don't live in the Yukon or even Minneapolis, but it's 15 outside now and I want to set up a propane forge in the garage. The garage is not bad,but a little drafty so makeup air is not a problem. I was planning on building a hood at 6' 6" off floor so I don't bump my head and above the small forge at waist level, then install an 600CFM induct fan to draw gases out thru the roof. Do these gases rise naturally or do they settle down low(problems)? Can't remember. Does this sound safe or a debacle ready to happen? Hate debacles.