For dogs that have aggressive responses to certain things the process of Classical Counter Conditioning is the ideal way to "change the dog's mind." Many people are understandably concerned that using treats will train the dog to be aggressive but this is not the case. The goal of this technique is to use the food (a good thing!) to change the dog's underlying emotional state. Its a powerful tool!
This video demonstrates using counter conditioning to blowing in a dog's face. Dr. Sophia Yin does a great job of both explaining and demonstrating how the Counter Conditioning process works.