What are the side effects of using oxygen?

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  1. #dryness
  2. #irritation
  3. #because
  4. #passages
  5. #nasal
  6. #therapy
  7. #drying
  8. #common
  9. #effects
  10. #effect
  11. #breakdown
  12. #oxygen
  13. #using
  14. #occur
  15. #uncommon