Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that can be deadly if inhaled in large amounts. It is produced when fuels such as natural gas, coal, kerosene, wood, propane, and oil are burned incompletely. When carbon monoxide builds up in enclosed spaces, it can replace the oxygen in your blood, leading to carbon monoxide poisoning.
Carbon monoxide poisoning can occur in various settings, but it is most common in indoor spaces with poor ventilation. Some of the most common sources of dangerous carbon monoxide emissions include:
Faulty gas stoves and appliances
Wood-burning fireplaces
Old or faulty furnaces
Clogged chimneys
Running a car in an enclosed garage
According to the Centers for Disease Control and Prevention (CDC), exposure to carbon monoxide can cause symptoms within 2 hours at low levels and within 5 minutes at higher levels.
When carbon monoxide builds up in your bloodstream, it replaces the oxygen that your vital organs need to function properly. Some of the most common symptoms of carbon monoxide poisoning include:
Shortness of breath
Dizziness
Nausea
Headache
Confusion
Carbon monoxide is especially dangerous for infants, pregnant women, and people with pre-existing health conditions such as emphysema, asthma, or heart disease. Even small amounts of the gas can be harmful to these individuals.
If carbon monoxide poisoning is not treated quickly, it can lead to long-term health issues such as:
Breathing problems
Parkinson's disease
Memory loss
Permanent brain damage
Heart damage
Treatment for carbon monoxide poisoning involves removing the person from the contaminated area and providing them with 100% oxygen. Mild cases can be treated with oxygen delivered through a mask, while severe cases may require treatment in a hyperbaric chamber. According to the Mayo Clinic, it can take up to a day for carbon monoxide to completely leave the body, and symptoms may persist for up to 2 weeks after exposure.
The best way to prevent carbon monoxide poisoning is to ensure that all fuel-burning appliances in your home are properly installed, maintained, and ventilated. Here are some additional tips for preventing carbon monoxide poisoning:
Have your heating system, water heater, and other fuel-burning appliances inspected annually by a qualified technician.
Install carbon monoxide detectors on every level of your home, especially near sleeping areas.
Never use a gas oven or stove to heat your home.
Never run a car or other vehicle inside an attached garage, even with the garage door open.
Keep chimneys and vents clear of debris and blockages.
The U.S. Consumer Product Safety Commission recommends buying carbon monoxide detectors that are certified by a testing laboratory and following the manufacturer's instructions for installation and maintenance.
In addition to installing carbon monoxide detectors, it's important to be aware of the signs that there may be a carbon monoxide problem in your home. Some warning signs to look out for include:
Soot falling from fireplaces or appliances
Rust or water streaks on vents
Loose or disconnected vent pipes
Moisture inside windows
Cracked or crumbling masonry on a chimney
If you notice any of these signs, have a trained technician inspect your appliances and make any necessary repairs.
Carbon monoxide poisoning is a serious and potentially deadly condition, but it is also preventable. By taking the necessary precautions and being aware of the signs and symptoms of carbon monoxide poisoning, you can protect yourself and your loved ones from this silent killer.
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