To trump:

Over the centuries, fart has not been without linguistic rivals. Since the early fifteenth century, for example, trump has served as a synonym for fart, or rather to denote an especially noisy fart.

(A Dictionary of Culinary Curiosities) by Mark Morton

Trump:

Verb. To break wind from the anus, to 'fart'. E.g."There's a disgusting smell in here. Has someone trumped?"
Noun. 1. An act of breaking wind. 2)The resulting smell of having broke wind from the anus, a 'fart'.