Specification
What is Carbon Monoxide (CO)?
• Carbon Monoxide is a colorless, odorless and tasteless poisonous gas that can be 
fatal when inhaled.
• It is sometimes called the "silent killer." 
• CO inhibits the blood's capacity to carry oxygen. 
• CO can be produced when burning any fuel, such as gasoline, propane, natural 
gas, oil and wood.
• CO is a by-product of incomplete combustion. If you have fire, you have CO.
Where does Carbon Monoxide (CO) come from?
• Any fuel-burning appliance that is malfunctioning or improperly installed. 
• Furnaces, gas range/stove, gas clothes dryer, water heater, portable fuel-burning 
space heaters, fireplaces, generators and wood burning stoves. 
• Vehicles, generators and other combustion engines running in an attached garage. 
• Blocked chimney or flue. 
• Cracked or loose furnace exchanger. 
• Back drafting and changes in air pressure. 
• Operating a grill in an enclosed space. 
What are the symptoms of Carbon Monoxide (CO) poisoning?
• Initial symptoms are similar to the flu with no fever and can include dizziness, 
severe headaches, nausea, sleepiness, fatigue/weakness and 
disorientation/confusion.
What are the effects of being exposed to Carbon Monoxide (CO)?
• Common Mild Exposure - Slight headache, nausea, vomiting, fatigue, flu-like 
symptoms. 
• Common Medium Exposure - Throbbing headache, drowsiness, confusion, fast 
heart rate. 
• Common Extreme Exposure - Convulsions, unconsciousness, brain damage, heart 
and lung failure followed by death. 
• If you experience even mild CO poisoning symptoms, immediately consult a 
physician!
FREQUENTLY ASKED QUESTIONS - CARBON MONOXIDE
Carbon monoxide is the #1 cause of accidental 
poisoning deaths in the United States.



