Sure you do. Just try it. If there's no rational reason to find something gross, it's easy enough to change if you try.
No, that's like telling someone they can control who they are attracted to. Just try it, there's no rational reason not to like that other person instead
This is all learned behavior.
Baloney. Again, that's like saying whoever you're attracted to is 'learned behavior'. It is not, and neither is your taste. Now you could desensitize yourself to something, but that doesn't mean it's no longer repulsive, it just means you've gotten better at not reacting to it.
