| Can be cured by breathing into a plastic bag to retain the carbon monoxide. |
| Presents an extremely dangerous situation as the blood may not be able carry sufficient amounts of oxygen to vital cells and tissues of the body. |
| Is a complication when hyperventilating and requires its own special and individual treatment. |
| Is usually harmless because oxygen is more easily attached to haemoglobin than carbon monoxide to a magnitude of 200 times. |
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