They say it is odorless, but……
Operating furnaces, portable heaters and wood burning stoves can be deadly if they are not working properly and could put you and your family at risk of carbon monoxide poisoning. Safety tips can be used to avoid carbon dioxide from making you sick this winter.
Carbon monoxide gas contained within the vehicle smoke is a deadly poison to humans. Be careful, cold weather in the rainy season like now this can increase the risk of deadly gas poisoning.
How to prevent problems with heating equipment and furnaces by not waiting for the last minute.
A German study actually found that if low-dose CO gas for pregnant women to prevent miscarriage.