Something which has never happened. PE Pacific insert. Never any problems with smoke coming into the room. Same wood I have burned all year. Start a new fire and need to add a log or two the smoke just blinds you. Then the smoke detector downstairs goes off. I have noticed smoke even lots of it when adding to a new fire but it has never come back into the room. Any thoughts or concerns I need to check. Stove seems to be heating as well also. Thanks!