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Cold Temperatures Bring Higher Risk of Carbon Monoxide Poisoning

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SALT LAKE CITY (November 2023) – Carbon monoxide (CO), sometimes referred to as the silent killer, causes more than 100,000 emergency department visits in the United States and at least 420 deaths each year1. Americans ages 65 and older have the highest risk of death from CO poisoning. In Utah, there were 201 emergency department visits and six deaths reported in 2022 (the most recent numbers available) for CO poisoning.* During the winter, the risk for CO poisoning increases. Utah Poison Control Center, Utah Department of Health and Human Services, Dominion Energy, and Unified Fire Authority join together to warn Utahns about the danger of CO poisoning, share information on the symptoms associated with it, and provide tips to prevent it.

What is CO?
CO is an odorless, invisible gas produced when gasoline, natural gas, propane, kerosene, and other fuels are not completely burned during use. Automobile exhaust is a common source of CO, but small gasoline engines, camp lanterns and stoves, charcoal and gas grills, gas ranges, and furnaces also produce it. When these are not working properly or are used incorrectly, dangerous amounts of CO can build up indoors or in enclosed spaces and poison people and pets who breathe it in.

What are the Symptoms of CO Poisoning?
Everyone is at risk of CO poisoning. Because you can’t see or smell CO, it is important to know the signs of CO poisoning and immediately seek medical help if symptoms occur.
The most common symptoms include:

  • Headache and dizziness (usually affecting more than one person in the same enclosed area)
  • Upset stomach, vomiting, and weakness
  • The disappearance of symptoms when people leave the area

If CO poisoning is suspected, quickly get to fresh air and call the Utah Poison Control Center at 1-800-222-1222, or 911.

How can CO Poisoning Be Prevented?
CO poisoning is preventable. Following are important steps people can take to help keep themselves and others safe.

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  • Install a CO monitor on each level of your home near sleeping areas.
  • Heating systems, water heaters, and any other gas-, oil-, wood-, or coal-burning
    appliances should be serviced by a licensed technician every year.
  • Install an Underwriters Laboratory-approved CO monitor on each level of your home
    near sleeping areas. Check or replace the battery twice a year. (As a reminder, do
    this when you change the time on your clocks each spring and fall.) Boats and
    recreational vehicles with propane stoves or heaters should also be equipped with
    CO detectors.
  • Inspect your home after heavy snowfall and make sure snow is removed from
    around exhaust stacks, vents, and fresh-air intakes.
  • If your CO monitor alarms continuously, leave your home and call 911 or your local
    natural gas company.
  • Get medical help right away if you suspect CO poisoning and feel dizzy, lightheaded,
    or nauseated. Immediately call poison control at 1-800-222-1222.
  • Do not use a generator, charcoal grill, camp stove, or other gasoline- or charcoalburning
    devices inside your home, basement, or garage. Generators should be
    located outside at least 20 feet from any window, door, or vent.
  • Do not run a car, truck, or other motorized vehicle inside a garage attached to your
    house, even if you leave the door open.
  • Do not burn anything in an unvented stove or fireplace.
  • Do not heat your house with a natural gas oven.
  • Most fire-related CO poisonings can be prevented by installing and maintaining
    smoke detectors.

Knowledge is the key to preventing carbon monoxide poisoning. Anyone who thinks they have CO poisoning should call the Utah Poison Control Center at the number above or call 911.


  1. National Center for Environmental Heath

* For additional information regarding exposures, hospitalizations and emergency department visits, and deaths relating
to CO poisoning in Utah, visit the Utah Environmental Public Health Tracking website at: 

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For more information contact:
Sherrie Pace at Utah Poison Control Center 801-587-0600
Jorgan Hofeling at Dominion Energy Utah 801-324-5453
Unified Fire Authority PIO Hotline 801-743-7118
Mark Jones at Utah Department of Health and Human Services 801-538-6191