It ALMOST goes without saying- this is a Rocket
Stove and is made to be used out doors or in well ventilated areas, much of the heat is lost to the Environment.
As built- to continue to use this as a cook stove something like a College Chemistry lab 'Fume hood' with a fan must be used above it and connected to a Chimney to
vent the column of exhaust gasses.
It also
should be mentioned that this is still a Great improvement on the ''3-rock '' fires approximately 40% of the world still use for cooking ! Big AL