Thunderpants (2002) on Netflix

Plot summary

Within thirty seconds of his birth, Patrick Smash breaks wind for the first time, to the horror of his parents and the doctor. Patrick was born with two stomachs, and his emissions are strong enough to blow people over. His father, often injured by them, leaves the house. At school Patrick is bullied, and his only friend is his classmate Alan A. Allen, a child prodigy who has no sense of smell. Patrick dreams of going into space. Together the two boys make Thunderpants, a pair of reinforced shorts strong enough to hold in what Patrick produces, and Alan's invention keeps the gas from harming anyone near him.