Are the gases from burning engine oil toxic?

[MacGianna]

Engine oil combustion gases are toxic and can cause certain harm to the human body. Engine oil combustion gases damage the circulatory system: Carbon monoxide binds to hemoglobin in the blood 250 times faster than oxygen. Once carbon monoxide enters the bloodstream through the respiratory tract, it combines with hemoglobin to form carboxyhemoglobin, which impairs the blood's ability to deliver oxygen to tissues. Therefore, carbon monoxide can harm the central nervous system, causing sensory and memory impairments, and even life-threatening damage to the circulatory system. Engine oil combustion gases can cause inflammation or redness: Currently, it does not pose a direct threat to human health. However, when nitrogen oxides and hydrocarbons react under solar ultraviolet radiation, they form a highly irritating light blue smog, which contains complex compounds such as ozone, aldehydes, and nitrates. The most significant harm of this photochemical smog to humans is the irritation of the eyes and upper respiratory tract mucosa, leading to symptoms like eye redness and laryngitis.