Many homes use natural gas.
When natural gas is used in a properly adjusted burner with an adequate air supply, only trace amounts of carbon monoxide may be emitted - the primary emissions are carbon dioxide and water vapor, the same substances we exhale when we breathe. However, if an appliance or furnace is not operating properly, higher levels of carbon monoxide can result. That s why an annual inspection is the first step in preventing carbon monoxide problems with natural gas equipment. Unlike carbon monoxide, natural gas is not toxic breathing it will not harm you. If you smell natural gas leave the home immediately and call your gas supplier from another location.