"Carbon monoxide causes extreme headache and nausea, may cause the lips and fingernail beds to turn bright red and, in high enough concentrations, can cause unconsciousness."
Brain damage can ensue from carbon monoxide. Because it is a colorless, odorless gas that we cannot see, smell, or taste, it is be harmful to humans. It replaces oxygen in the blood and deprives the heart, brain, and other critical organs of oxygen, it is hazardous when inhaled. Headache, dizziness, weakness, nausea, upset stomach, vomiting, chest discomfort, and confusion are the most typical signs of carbon monoxide poisoning.
Worldwide, it is a highly frequent cause of fatality in circumstances involving accidents, self-slaughter or homicide. Survivors have been reported to have fingernail bed manifestation.
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