Handy's breathing mask

Handy's breathing mask was an invention that Handy Smurf created in the cartoon show episode "Born Rotten" when a purple smelly hatchling from the central steppes of Asia had hatched from a star-patterned egg that was found by Brainy Smurf and brought into the Smurf Village. The breathing mask was used by Grouchy when he had to bring the hatchling into the forest at the point when Gargamel was sighted in the forest following the scent of the creature, hoping that the scent will lead him to the village.

Empath: The Luckiest Smurf stories
Handy's breathing mask was used by Brainy in the EMPATH: The Luckiest Smurf story "Papa's Big Crush" when he and Tracker went into Papa Smurf's laboratory after it had been defumigated in order to look for the cause of the village leader's transformation.