Strange odors coming from your appliances are rarely a good sign, and in the case of a furnace or another combustion system, it could indicate a serious problem. If your furnace has a strange smell, you can use these rules of thumb to narrow down the culprits before calling the experts. If your furnace is blowing dusty-smelling air, this may …
When Your Furnace Smells, Here’s Help To Hunt Down The Source
When you started your furnace up for the winter, there might have been furnace smells that you weren’t expecting. You might smell a little oil or gas, must or mildew, a dusty-burning smell, or the smell of hot metal or wires.