Quite a hard dislike to cure them of tbh. We had a mongrel ***, a rescue dog who had been horribly treated, who hated everything, absolutely everything, bikes, skateboards, people in macs, people in hats, cats, dogs, cars, you name it. After years we managed to talk her around to being normal with everything but bikes and skateboards. As Woof says is there nowhere else you can walk her?