Nitrous or nitrogen oxide is used in many ways.
Dentists to remove fear of pain from children that are their patients use it.
Such a patient will be cajoled to sit on a dentist chair and a mask of nitrous dispenser will be placed over
his mouth. He will be asked to inhale deeply the nitrogen gas so that he cannot
remember any pain that will come when his teeth is being plucked out. The funny
thing is that such a child that has experienced the nitrous gas at a tender age
may eventually become addicted to it.
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