Carbon monoxide poisoning
Invisible. Silent. Deadly.
Often called the invisible or silent killer, carbon monoxide (CO) is an odorless, colorless, tasteless gas created when fuels (such as gasoline, wood, coal, natural gas, propane, oil, and methane) burn incompletely.
A person can be poisoned by a small amount of CO over a longer period of time or by a large amount of CO over a shorter period of time.
CO poisoning by the numbers
Common sources of CO poisoning

In the home, heating and cooking equipment that burn fuel can be sources of carbon monoxide.
Have fuel-burning heating equipment and chimneys inspected by a professional every year before cold weather sets in.
When using a fireplace, open the flue for adequate ventilation. Never use your oven to heat your home.
In the winter, clear snow and debris from furnace, dryer, fireplace or oven vents around your home to prevent a CO buildup.

Know the signs of CO poisoning
Common signs of CO poisoning include:
- Headache
- Fatigue
- Confusion
- Nausea
- Vomiting
- Weakness
- Shortness of breath
If you suspect you or someone you know may be suffering from CO poisoning, call 911 immediately.