Writer's Centre: CSI Dictionary: C

Carbon monoxide
Flammable, colorless, odorless, tasteless toxic gas produced during incomplete combustion of fuel derived from crude oir (gasoline, kerosene, etc.) Inhibits the blood's capacity to carry oxygen. Low levels of exposure cause flu-like symptoms such as mild headaches, nausea, shortness of breath; higher levels of exposure cause mental confusion, dizziness, nausea, severe headaches, and fainting; very high levels of ezposure may cause unconsciousness or death.