A detection device, much like a smoke detector, can help save your family from dangerous gas inhalation. Carbon monoxide detectors range in price from $20 - $60. Some are combination smoke and carbon monoxide detectors, others even detect propane gas. Fire fighters recommend we place detectors where our families hang out most, usually the kitchen or living room. Missouri Gas Energy also recommends checking appliances for gas leaks before winter. "Even though it`s been so warm lately that we don`t think about this, in a few weeks we very well may have our homes closed up, and in another month or so, we may be using heating sources," Barbara LaBass, for Missouri Gas Energy, says. LaBass reminds homeowners to also check fire place flues for leaks.