HELP!!!! We moved into a house last year. It has forced hot air (oil furnace) and we have noticed a smell coming from the furnace room (enclosed in a finished basement). We have noticed the smell when the heat is on, and it is worse when the fireplace is being used. When we have the fireplace going, we notice an intense odor coming from the return in the room, and when we go into the furnace room, that smell is even more intense. This smell is coming up into the house through the heating ducts.
We have tried everything.....orininally, we thought it was because of a leaking flange on the toilet, had that fixed and it is still here. We have replaced the furnace (cracked heat exchange-thought that might be the problem-it's not). Have had the flue inspected (no obstructions) the duct work cleaned (no dead animals). The fireplace has been cleaned and inspected, and a cap was just put on....it was just suggested by the furnace/heating co. that we have a vent installed in the furnace room so that air can be circulated in that room (it is a very small area, that was enclosed by the previous owners....) any suggestions out there? we need all the help we can get....can't stand it anymore...don't know what else to do....HELP!!!