Carbon Monoxide Safety

Often called the invisible killer, carbon monoxide is an invisible,
odorless, colorless gas created when fuels (such as gasoline, wood,
coal, natural gas, propane, oil, and methane) burn incompletely. In the
home, heating and cooking equipment that burn fuel can be sources
of carbon monoxide.

For the full story, click on the link:  COSafety (1)