Carbon monoxide is a colorless, odorless and poisonous gas.
Because you can't see, taste, or smell it, it can cause serious health problems before you even realize it's there. The danger of carbon monoxide is the displacement of oxygen from the blood. Oxygen is needed in order for our organs to function properly. Early symptoms of exposure include headaches, fatigue, and nausea. Continued exposure can lead to unconsciousness, brain damage and even death.