Comments by "Barack Obama" (@barackobama2722) on "SmarterEveryDay" channel.

  1. This create ozone and nitrogen oxide, it’s dangerous for your health and lungs!
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  2. It’s very very incredible!
    1
  3. This create ozone and nitrogen oxide, it’s dangerous for your health and lungs!
    1
  4. This create ozone and nitrogen oxide, it’s dangerous for your health and lungs!
    1
  5. This create ozone and nitrogen oxide, it’s dangerous for your health and lungs!
    1