Sooo? Maybe that is a good reason for us to get away from jet engines and go diesel as diesels have no CO output! Gasoline engines that are properly tuned don't either.Los Angeles International Airport (LAX) is the single largest producer of carbon monoxide in the state of California.
How cool is that, Rogue?
Oh, several idiots have tried to commit suicide by running their modern cars in a closed garage however they do not make carbon dioxide but make enough CO2 to knock you out, and kill the engine, and then you wake up with a bad headache.
Oh, plants like carbon dioxide better than they like carbon dioxide so the plants will take care of it!