I think it was involuntary. I think he had an actual 'problem'
It's why I didn't complain too much. To be fair, it was still less offensive than Micky's verbal emissions.
God I hated Micky. I sincerely hope he's dead.
Irritable bowel or colitis or what have you? I once went to a job interview with a chap who suffered similarly. He kept having to go out to fart loudly. Difficult to bring your interviewee A game in a situation like that.