There is good authority for "farter" to be included in the Chihuahua lexicon. In addition to its standard colloquial usage, e.g., "that bastard is a phi beta farter," I am happy to report that there is a wonderful article in
Wikipedia on the subject of professional farters. I quote:
A flatulist, fartist, or professional farter is a performer who receives payment for farting in an amusing and/or musical manner.(The head word is flatulist.)
That has brightened up a rather gloomy morning for me
.