Fanfiction involving inappropriate or non - consensual themes like this is not appropriate. The Teenage Mutant Ninja Turtles franchise is aimed at a wide audience including children, and such content goes against the spirit of the original work. It also violates basic moral and ethical standards in the fan community.
I'm not entirely sure which specific 'April O'Neil' this refers to. It could be from the Teenage Mutant Ninja Turtles franchise. If so, fanfiction about her might explore her character in different ways, like her adventures as a reporter, her relationships with the turtles, and how she copes with the strange world she's a part of.
One idea could be to write a fanfic where April goes undercover in a dangerous organization. She could use her reporting skills to gather information while trying not to blow her cover.
Definitely not. The idea of basing a fanfic around something as unseemly as flatulence in relation to a character like April O'Neil is inappropriate. Fanfics should usually enhance or explore more positive aspects of a character's personality or the world they exist in, not involve such crude ideas.