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.
Although carbon monoxide levels caused by cigarettes are relatively low, there are still some long and short-term risks that should be recognized. Carbon monoxide in cigarettes is just one more reason why smoking is a habit to kick!About the Author: Alexandria Haber is a freelance writer and is the head researcher and content manager for http://www.carbon-monoxide-poisoning.com/ .arbon monoxide (CO) is known as the silent killer because it is colorless and odorless and thus virtually impossible for a human to detect. The symptoms of carbon monoxide exposure are typically seemingly harmless, which is why detection of CO poisoning often comes too late.