Possible triggers

Sensory Overload: Cats have an exceptionally keen sense of smell. “Stink face” may be a reaction to an overwhelming scent that your cat finds intriguing, puzzling, or even offensive.

Taste Sensations: Certain tastes can trigger the response as well. Cats may exhibit this expression after encountering a new flavor, especially if it’s unusual or unpleasant.

Social Communication: In multi-pet households, “stink face” can be a social cue. Cats may use this expression to convey a message to other animals, signaling discomfort or a desire for personal space.

So all that text just to say cats do the stink face in the literal same contexts a human would ;p