We build a small stone niche with a "clean flat stone tablet" over top a "small" dry wood fire, and place it under a tall well branched fir tree, the fire would heat the stone and the heat would sink in the stone tablet, we could "cook" on this stone what little smoke would curl and adhere to the bottom of the stone. Whatever smoke escape the stone niche would rise and be disapated among the branches. Still have a problem with the smell at close range.
just a thought
just a thought