Carbon monoxide (CO) is a colorless, odorless gas that can cause sudden illness and even death. It is produced by the incomplete burning of fuels, such as natural gas, propane, oil, wood, and coal. CO poisoning can occur in homes, workplaces, and vehicles. It is important to be aware of the signs and symptoms of CO poisoning and to know how to check for it.
The most common symptom of CO poisoning is headache. Other symptoms include nausea, vomiting, dizziness, fatigue, and confusion. In severe cases, CO poisoning can cause loss of consciousness, seizures, and death. If you suspect that someone is suffering from CO poisoning, call 911 immediately. In the meantime, move the person to fresh air and loosen their clothing.