Sometimes the furnace will stink when I start it up after sitting for the summer. What I do is open the windows and the door and turn on the fantastic roof fan and let the furnace run for about 15 minutes. Then I turn the fire alarm back on. Seems to work for me.
By the way, it is not a good idea to put your full address in your profile, just the city and state, some folks only put the state. You would not want to be on here talking about your current trip or planning a trip and tell the bad guys where you live and when you will be away.