The state fire marshal is encouraging people to make sure their carbon monoxide and smoke detectors are working.

According to the Centers for Disease Control and Prevention, 430 people die every year from accidental carbon monoxide poisoning. Winter weather increases the chances of carbon monoxide poisonings.

Carbon monoxide is often referred to as the silent killer because it is an odorless, colorless, poisonous gas that spreads from household items and equipment made from charcoal, wood, gas or oil.

Test your carbon monoxide alarms monthly.

If your alarm has replaceable batteries, they should be changed at least every six months.

If the audible trouble signal sounds, check for low batteries. If the battery is low, replace it. If it still sounds, call the fire department. immediately move to a fresh air location. Make sure everyone inside the home is accounted for.

Make sure vents for the dryer, furnace, stove, and fireplace are clear of snow build-up. And always use gas or charcoal grills outside.