So I got up and checked the house. There was nothing wrong, and no evidence of smoke anywhere. Then I stood in the hall and watched my smoke detector for a minute. Its Battery OK light didn't flash. So I changed the battery. I went back to bed, and lay awake for a bit worrying that it had been a premonition of some sort. The smoke had seemed so real.
I'm glad it wasn't real.
I want you all go check your smoke detector battery RIGHT NOW! Replace it right away if the Battery OK light isn't flashing or if the batteries are more than a year old.
Please, do it right now.