I went to Target to buy a fan, but all I saw were space heater fans. So I picked up one with a fan setting, and put it in my dorm room near my desk. When the coils heat up (and when I feel the heat), I notice a slight burning odor for the first 5-6 seconds. I just wonder if there is still subtle burning odors in the air that can reach the smoke detector and sound off the siren. I'm in a dorm room, so this is the last thing I need.