How do you tell someone not to bring their dog when they visit?

My brother takes his dog everywhere, including when he comes to visit people. I don't want his dog in my house, in my yard, or for that matter, any where near me. He has a bull mastiff, which is quite a large dog (over 130 lbs) who loves to pee on everything, and when it goes to the bathroom, its bigger than my boot. And, he tries to mate with everything, including the furnature. Plus, it smells. I like dogs, I do, but I don't like THIS dog. I have told him that I find it extreamly rude when someone brings thier dog into someone elses house, when they come to visit. He just says "oh, he's a puppy" or "he's a good boy". No, he's not either. I have told him that if he is going to come over, not to bring his dog, and he then says, "well, if he can't come, then I wont either". I would still like to see my brother, but not his dog. What can I do? How can I get one, without the other. He refuses to leave him in the car. Has anyone had a problem like this, and if so, how did you handle it?