Historical Examples. 1  But this is insecure ground, and the meaning can but be guessed at. 2  He realized that his tenure was insecure, and he dreaded exposure. 3  Her foot slipped from its insecure rock hold and she stumbled. 4  He left her with the feeling that the foundations70 of life, as she was leading it, were insecure.
Carbon monoxide poisoning is caused by inhaling combustion fumes. When too much carbon monoxide is in the air you're breathing, your body replaces the oxygen in your red blood cells with carbon monoxide. This prevents oxygen from reaching your tissues and organs. Various fuel-burning products and engines produce carbon monoxide.
If anyone has symptoms of carbon monoxide poisoning, get emergency help. More than 20,000 Americans go to emergency rooms each year because of carbon monoxide poisoning, and more than 400 people die. Donât go back into the house until itâs safe. Your fire department can help you figure that out.