30 year old fireplace suddenly smoking
We have a fireplace over 30 years old that has worked flawlessly until this season. We just had it cleaned and no major problems found. Damper is open, ash cleanout door is closed. The one tall tree in front of house no longer has leaves on it so don't see how that could impact. I do wonder about the wood, it is hardwood but from 2005 when the hurricane went through and it's fairly punky. I simply cannot see it being a design problem since the thing worked for 30 years, so size of flue, chimney height etc. I have ruled out.
Any other ideas