If it only happened once, just disregard it. If it keeps happening you may have a dangerous condition in your house; have the fire department check it out. *Disclaimer: I am not a lawyer, despite the handle. Words to live by: "Every creative act results from a sudden cessation of stupidity." -Edwin H. Land, inventor of the Polaroid Land Camera"The problem can always be solved with the materials in the room." -My college Physics Lab Professor