Send Smoke up Your Chimney With Fire
If smoke puffs into the room from a fireplace or woodstove, light a sheet of newspaper and hold it up the chimney. The bright burst of heat will reverse the draft and send the smoke upward. To be sure your chimney draws properly when you start a fire in a cold fireplace or woodstove, begin burning with small amounts of crumpled newspaper and thin strips of dry wood. Don't add heavier wood until the smoke is drawing briskly up the chimney, not escaping into the cabin.