I can't help you much with the fear aggression, Millie suffers from it to an extent and I haven't been able to do a darn thing with her!

For the smell from the accident, get Nature's Miracle or Simple Solution and use it. It will work, though sometimes it takes more than one application. Follow the directions and shake the bottle well. I didn't the first time and I was very disappointed when it didn't work like everyone said it would.

Hope your Dad's feeling better.