My ex used to work an ice cream factory (Walls I think but not completely sure I remember right). She said she wouldn't touch mint with a barge pole. Apparently, any wastage from other flavours was chucked in the mint one because mint is such a strong flavour it masks the other flavours.

On a brighter note, in between flavour changes on the equipment, they would spend a whole shift cleaning. For flavours marketed as allergy friendly, they would spend two shifts cleaning, so didn't need to put "may contain traces of..."

Does that change your mind at all?