Home / Series / The Epic Tales of Captain Underpants / Aired Order / Season 1 / Episode 12

Captain Underpants and the Sickening Fumes of Smartsy Fartsy

To steal Mr. Krupp's rule book from a tightly locked safe, the boys cook up a super-intelligent gas cloud who winds up turning against them.

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  • Originally Aired July 13, 2018
  • Runtime 25 minutes
  • Content Rating United States of America TV-Y7
  • Network Netflix
  • Created December 21, 2018 by
    Administrator admin
  • Modified March 15, 2024 by
    malte.hammerla