Which exhaust emission reduces the blood's ability to absorb oxygen?

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Which exhaust emission reduces the blood's ability to absorb oxygen?

The emissions of carbon monoxide reduces the blood's ability to absorb oxygen and harms the body's central nervous system.

Carbon monoxide is both odourless and colourless and is therefore very dangerous. If you are exposed to exhaust emissions and get a headache or start feeling unwell, you must get fresh air as soon as possible to avoid carbon monoxide poisoning.

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