My Friday the thirteenth started at 1:30am to the sound of one of the smoke detectors going off.
Got up to see what the heck was going on to find that my pellet stove had malfunctioned and was filling the house with, yes, smoke. Turn it off and unplugged it, opened all the doors and windows and set a fan at the front door blowing the smoke out.
Oh, and it was a balmy 17 degrees. Happy to say the lord was looking out for us and nothing serious happened.
Just a suggestion, make sure your smoke detectors are in good working order.