fiacs, what you are experiencing is referred to as a "trigger" for urinary incontinence.
From the research for my book on managing incontinentce I learned that many with overactive bladder may find that certain sights, sounds, or situations, i.e. “triggers,” stimulate urination. For OAB, these visual, auditory, or situational "triggers” usually include running water, rising from a sitting position, entering the bathroom, drinking a liquid, washing hands, entering the shower, placing a key in the door, and others. Specific stress situations also can be “triggers.” Each person may respond to one or even more different triggers.
It is important to know what your “triggers” are in order to prepare for them or to avoid some situations.
It took me a while to see the pattern that I frequently was peeing in my diaper whenever I helped my wife with washing the dishes (and no, I did not get out of washing the dishes).
--John