I have noticed for quite a while that when the heater starts blowing, sometimes there is a light smell of something burning. It doesn't last long and only seems to happen in the first couple of minutes when the heater turns on. Besides the smell I can't feel anything different as the heater still works fine (although there is no way for me to tell if it would have worked better otherwise). It hasn't really bothered me that much but recently it's become more noticeable with more heater use as the weather here in the northeast finally decided to get colder. Any of you guys experienced the same thing? Could this be normal by any chance?