Skip Navigation
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Carbon Monoxide

Carbon monoxide is an odorless, colorless gas that comes from burning things like kerosene, coal, or wood. It is a poison.

Breathing air containing only a very small amount of carbon monoxide can cause carbon monoxide poisoning. Carbon monoxide replaces oxygen in the blood.

What happens if a person breathes carbon monoxide?

  • symptoms like the flu or a cold
  • blurred vision
  • stomach aches
  • trouble breathing
  • sleepiness
  • ringing in the ears

Carbon monoxide can come from

  • broken gas water heaters and furnaces
  • space heaters that don’t have vents
  • gas clothes dryers
  • tobacco smoke
  • fuels burned in wood and gas stoves

Carbon monoxide detectors help prevent carbon monoxide poisoning in the home.

Illusion
Other stuff you might like ...
Illusions
Can you believe your eyes?
Go!
What's That Word
Scientific Dictionary
Not sure of what a word means?
Find Out!
an open book with the letter a over it
For parents
Protecting children's health is a vital public health goal. Children are particularly vulnerable to the health effects of environmental contaminants. For more information, see Children's Health.
For parents
Smoking can have lasting health effects on a person. Scientists are studying the effects of different cigarettes. They compare the effects of electronic cigarettes to regular cigarettes. These cigarettes may have different effects on the human body. Learn more about the E-Cigs and Smoking Study.
Back to Top