i have a granddaughter like that. takes everything literally.
you put the flea medication on their shoulder blades so they can’t lick it. As soon as they realise what you’re doing, they leave, usually half way thru the application.
try sprinkling a few regular pieces of cat food-just 4 or 5. he might eat them but keep on eating the other stuff too. Works on my Boots!
i have a granddaughter like that. takes everything literally.