Does the intentional passing of wind invalidate the prayer for someone afflicted with chronic flatulence (Sils) and Irritable Bowel Syndrome (Colon)?

For a person with incontinence ( سلس ), if he intentionally expels wind, his prayer becomes invalid. However, if it exits unintentionally, his prayer is valid.

Prayer while holding back wind is valid, but it is disliked for a Muslim to do so.

Expelling wind intentionally, or for someone who is not afflicted with incontinence, invalidates the prayer, even if it has no smell. Hearing or smelling it is not a condition; rather, it suffices to be certain of its exit.