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.
1 Common Extreme Exposure - Convulsions, unconsciousness, brain damage, heart and lung failure followed by death. 2  If you experience even mild CO poisoning symptoms, immediately consult a physician!  Properly equip your home with carbon monoxide alarms on every level and in sleeping areas.