The present invention provides a device and method for automatically reporting and determining the geographic location of potential carbon monoxide emergencies utilizing wireless E-911 location systems. The combination carbon monoxide and wireless E-911 location alarm in its main device embodiment comprises a self-contained carbon monoxide alarm interfaced with a cellular transceiver, which operates in existing wireless E-911 location systems. The cellular transceiver is a cellular processor with integrated memory for storing emergency identification data for automated carbon monoxide emergency incident reporting to 911 public safety answering point operators. In one mode of operation, upon sensing the presence of carbon monoxide, the cellular transceiver automatically initiates a 911 emergency call, transmitting emergency identification information over a wireless E-911 location system to a 911 public safety answering point operator, who dispatches public safety personnel to the location of the emergency carbon monoxide incident.