carbon monoxide
New Law Requiring Replacement Of Carbon Monoxide Alarms Goes Into Effect Today
This CO detector saved its owner's life according to the Flickr page (Source: windsordi/Flickr)Just one day after news broke that five people died from suspected carbon monoxide poisoning in a home in the suburbs of Washington D.C. [http://www.washingtonpost.com/national/health-science/md-fire-officials-5-dead-from-suspected-carbon-monoxide-poisoning-in-washington-suburb/2012/