[jsimerk]

So I was sitting in my living room and all of a sudden smelled a strong burning/fire smell. Figured out it was coming from my heating vent in the wall. Turned the heat off and looked inside. Looks pretty dusty in there. Our house is very old so I am wondering if it's just that we need to get it cleaned or if there could be something else wrong with it and what is the probablilty that it could actually cause a fire