One good way to do this is by using a Dakota fire hole. There are many variations on this method, but I’ll demonstrate here the one I like best. You will need to dig a hole that is just over a foot deep, and no wider than that in diameter. The pit can be widened at the bottom to allow for longer pieces of wood. Then dig a small tunnel beginning a foot or so from the main pit and angling down to the bottom of it. This will allow additional air to be drawn through and help the fire to burn hotter and more efficiently, producing less smoke….
Great Survival Tip. Always be safe.