I don't know if there's anything to make it smellier. I don't think that would work very well though. Apparently, dogs like smelly things. I think your dad's theory makes sense but I don't think it's true at all. Kai was taken out to pee about 3 times in an hour when potty training. Now, he can last over night without any problems. Holding it comes with age. Pups usually have to pee more often because that's all they can hold and control. I think taking ringo to pee as often as you can is one of the best ways to avoid peeing inside. As he grows older, you can take him out less often and eventually he'll be fine in the house for a period of time.