Yes, you already know carbon monoxide is a colorless, odorless, tasteless, deadly gas. But, a reminder never hurt, right?!
When appliances are properly installed and maintained, they burn only small amounts of carbon monoxide. Anything that disrupts the burning process or results in a shortage of oxygen can increase carbon monoxide production. Wood, coal and charcoal fires always produce carbon monoxide, as do gasoline engines.
There could be things that happen without you knowing that may cause the appliances or fireplaces not to vent properly such as chimneys plugged by birds’ nests or tree...