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.
Wood burning and gas-powered fireplaces are a common source of carbon monoxide in the home. Leaving the window open a few inches allows the circulation of fresh air in the room while preventing negative pressure build-up / backdrafting, which can draw carbon monoxide and other toxins into the home.here are many precautions you can take that will help your family avoid dangerous exposure to carbon monoxide. Click on any of the potential carbon monoxide sources in the house pictured below to read safety tips on how to stop carbon monoxide from invading your home.