Check Your Detector
Every year, at least 430 people die in the U. S. from accidental carbon monoxide poisoning (CO), according to the Centers for Disease Control and Prevention based here in Georgia.
Because you can't see or smell this life-threatening gas as it fills a home, a working CO detector is your only real defense against poisoning (along with properly maintaining gas appliances and fireplaces). Test your detector monthly. Replace batteries every six months.
Also, don’t forget to flip over the unit and check its “best before” date. Most CO alarms have a usable lifespan of about seven years. If yours has expired, replace immediately.