The last two cats I had got a rude introduction to sinks when we first got them, which has to have been more than 18 or 19 years ago. (Neither is living anymore.

) They were born at a relative's farm, and so when they were brought home, the first thing they got was a nice warm flea bath.

They were somewhat displeased with this.
Once the trauma had passed, they went one to be all nice and friendly and pleasant all their lives, but they almost always stayed out of the bathroom, and if anyone would
carry one of them into the bathroom, the sight of the sink or bathtub would result in immediate and vigorous squirming. If brought closer to the sink, the squirming would be enhanced with the addition of extended claws.