Adam works with a lady that had an intense fear of infections and contamination from blood after witnessing the aftermath of a severe road accident where a parent and child died from a car crash. After running home after the accident she discovered she still had their blood on her which led to very high levels of anxiety, and the likely point of inception of this phobia. 

Adam uses hypnosis and parts therapy to negotiate with the part responsible for anxiety to allow a more balanced future where she could reduce risks without having anxiety and panic attacks. 

https://www.phobiaguru.com/fear-of-blood-hemophobia.html