A Melbourne engineer who claims his colleague repeatedly farted near him and "thrusted his bum" at him is hoping his bullying claim is successful on appeal.

David Hingst, 56, had sought $1.8 million in a suit against his former employer Construction Engineering, but a Supreme Court judge threw the case out last year, finding there was no bullying.

Hingst launched an appeal and it came before the Court of Appeal on Monday, when he told the panel of judges that “flatulence was a form of bullying” and his ex-colleague Greg Short was a serial farter.