Carbon monoxide can accumulate to dangerous and even deadly levels in poorly ventilated areas. Avoid exposure by proper installation of appliances and machinery, routine maintenance and service timely inspection. You should also install a CO alarm to alert you when CO levels reach a dangerous concentration. When installing your CO alarm, be sure to follow the manufacturer's guidelines for placement and mounting height.

Make sure that you know what fire department number to call if your CO alarm goes off. Be sure to test your CO alarm once every month. If your alarm goes off, you should immediately go to an outdoor, fresh air location. If this is not possible, get yourself by an open widow. Check that everyone inside the building is accounted for and breathing in fresh air.

Do not run a car inside a garage or a kerosene heater indoors. Even if the garage door is open, you should move the car out into the fresh air as soon as possible. If you live in an area in which it snows, regularly check that your car's exhaust pipe is not filled with snow. In the event of a snowstorm, make sure that any vents that are used for furnaces, stoves or dryers are free of snow build up.