Abstract
It is described how carbonmonoxide is formed by incomplete burning of carbon or carbon compounds and how easily it penetrates the car when there are leakage's in the exhaust or heating system. Carbon monoxide combine much easier with haemoglobin than oxygen. which therefore can assimilate an insufficient quantify of oxygen. Chances for a CO poisoning are higher with an air-cooled engine than with water-cooled engines. Truck drivers suffer often from chronic CO poisoning. A number of symptoms of CO poisoning are described.