Vivian farted loudly and she playfully laughed while fanning the reeking air behind her. "Ooh that certainly felt spooky-"
"If you think that's scary then you haven't smelled my stinky song!" Melody Pianissima farted upon being summoned for being akin to a gassy ghost girl such as her. "I dare you to beat my melodic methane!"
"Do we really need to make such a wonderful passage of the wind a contest-"
"To see who is the best? Why of course!"
So that is how poor Vivian got roped into having a fart off with Melody since both of the ghoulish girls had their ghastly fumes populate the haunted woods surrounding a particularly infamous mansion
