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Which substance in the car's exhaust fumes impairs the blood's ability to transport oxygen?

Carbon monoxide, a dangerously toxic gas, reduces the blood's ability to absorb oxygen, which can cause fatigue. Cars with catalytic converters reduce carbon monoxide emissions.

Carbon monoxide is a highly toxic odorless and colorless gas that impairs the oxygenation of the blood, which can lead to fatigue and lack of concentration. If you have a car with a catalytic converter, carbon monoxide emissions are reduced.

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