The state fire marshal???s office has a list of approved devices and installation requirements on its website at <a href="http://osfm.fire.ca.gov/What">http://osfm.fire.ca.gov/What</a> is carbon monoxideCarbon is an oderless, colorless gas that is produced from furnaces, fireplaces, common household appliances, vehicles and other devices that burn fuels including propane, natural gas and oil.Symptoms of poisoningHeadache, dizziness, loss o