Yes. The Genie Stove is designed with a unique combustion system called ‘Secondary Burn’. Lower air vents allow the fire to suck in oxygen into the outer cavity wall. As the oxygen rises it is heated and ignites as it exits the cavity wall at the internal top of the fire pit. This secondary flame ignites the smoke and residue which would escape into the atmosphere normally. This results in a much more efficient and cleaner burn – with much more heat being produced from the same amount of fuel. The secondary burn takes 10-15 minutes to ‘kick in’ as the outer wall heats up. Obviously the cleaner the fuel you use, the better the ‘smoke free’ effect that is achieved.