A small, portable generator used to create electricity during a power outage can be dangerous. The Centers for Disease Control and Prevention warns that such a device can kill within minutes when not used correctly.

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FAITH LAPIDUS: You can do a number of things to protect yourself from the effects of carbon monoxide. First, immediately leave the area if you recognize the signs of carbon monoxide poisoning in yourself or others.

Seek emergency medical services after you leave the area where you suspect the gas might be. Usually, the treatment for carbon monoxide poisoning involves breathing in large amounts of oxygen. However, a doctor will know the best method to treat the effects of such poisoning.

Carbon monoxide does not quickly leave the body, even after treatment has begun. It can take several hours before the gas disappears. If you suspect carbon monoxide is a problem in your home, call your local fire department. Many firefighters have the necessary equipment to find or identify the gas.

A Montpelier, Vermont, firefighter shows a device used to test if a person is suffering from carbon monoxide poisoning

CHRISTOPHER CRUISE: In many countries, it is possible to buy and use a special device that will warn when harmful levels of carbon monoxide are in the area. These devices can be linked to a home’s electric system. Others are battery-powered. Experts say these devices should be placed near sleeping areas in the home and they should be tested at least twice a year.