Carbon Dioxide- Why is it dangerous.

Your body has no inkling of how much Oxygen you are getting. When you breath you take in a mixture of air and the Oxygen is picked up and burned in your body. Carbon Dioxide is produced. Your body monitors the amount of Carbon Dioxide, not the Oxygen you have in your blood.

When you walk into an enclosed, oxygen deficient area like an empty tank. Your body does not get sufficient oxygen; you do not produce enough carbon dioxide and your body registers the "oxygen deprivation" effects of suffocation.

On the other hand when you walk into a Carbon Dioxide enriched area, your body registers you have enough carbon dioxide so, you stop breathing, are overcome and probably die. There is no sense of suffocation because you body, measuring carbon dioxide is in a happy place.

John Clark