>>149569591It depends on what you mean by "brap".
What is a fart? Methane, or the expulsion of waste gases? If the character is a cartoon robot like XJ9, it might depend on her fuel source. Were she powered by biofuel like an android, she would likely have some form of digestive system, and her fart would be indistinguishable from that of a biological woman.
If she were powered by petroleum derived fuel, she would expel engine fumes, but not likely through an ass-like mechanism as the braps would be far too frequent to contain. If electrically powered, she is unlikely to brap unless she farts synthetically via some form of methane storage that exists purely for appearing more human, or they may simply be air inhaled for this purpose, perhaps into some form of fart bladder. Such is the mechanics of robotgirls farting.