Carbon monoxide poisoning is caused by inhaling combustion fumes. When too much carbon monoxide is in the air you're breathing, your body replaces the oxygen in your red blood cells with carbon monoxide. This prevents oxygen from reaching your tissues and organs.

Various fuel-burning products and engines produce carbon monoxide. Normally the amount of carbon monoxide produced by these sources isn't cause for concern. But if they're used in a closed or partially closed space — such as using a charcoal grill indoors — the carbon monoxide can build to dangerous levels.

Smoke inhalation during a fire also can cause carbon monoxide poisoning.

Feb. 24, 2015

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