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When people exhale they are not giving out oxygen but are putting out extra carbon dioxide which is poisonous to humans (that's why we blow it out). But the amount of oxygen we remove from the air we inhale, and the amount of carbon dioxide we add to our exhaled air, is not nearly enough to be immediately dangerous to someone else. This is why you can revive a person by carefully breathing into their mouth while pinching their nose, as in rescue breathing.
The only way exhaled air becomes hazardous to yourself or others is if you are exhaling for an extended time in a small, air tight space. Then you use up enough of the oxygen, and add enough carbon dioxide, to create a dangerously low oxygen concentration, or a dangerously high carbon dioxide concentration.
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What day will Barack Obama die on?
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Can you die from inhaling helium?
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Can poisonous gases kill a human?
Yes. If you inhale enough of it to displace the oxygen content in your blood you can die from inhaling poisionous gasses.
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Poor circulation to the brain can cause tissues to die from lack of oxygen. Another cause of tissue damage in the brain can be a blow to your head or inhaling smoke from a fire more than oxygen (which can also cause suffocation).
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Oxygen is an element and can't really be chemically created. It can be separated out from compounds that contain oxygen ( water being most common ). People can survive on oxygen that has been separated out from other compounds.
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they die because it is too cold,-150C, and there is no oxygen.
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12 a year
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Yes you can, don't inhale it!
What is the continuous inhaling and exhaling of oxygen and carbon dioxide?
Yes, do that often otherwise you will die.
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about 30% of all users die.
