Eli5: We all known gasoline fumes are bad for us, are we exposed to them when we go outside for a walk? If so, how have a lot of people not fallen ill?
In: Biology
To address the other side of your question, the amount of gasoline fumes which are released by cars is extremely small for several reasons. First off, any gasoline fumes coming out of a car represent a waste of fuel. Car manufacturers are always trying to maximize fuel efficiency, so they engineer the engines and fuel systems of cars to burn as much of the gas as possible in a way that helps actually propel the car. Secondly, because it’s well recognized that gasoline fumes and other unburned products found in the exhaust of an engine are toxic and highly polluting, cars are built with a part called a catalytic converter which provides a second chance for any toxic emissions to be converted into less toxic compounds like water and CO2
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