There are many phobias for whatever reasons. Even though this is different from your situation, there are those who have a phobia of driving after being involved in a motor vehicle accident, collision, crash, etc. However, one of the best ways to overcome phobias and fears is to continually speak the follwing scripture over that phobia. You will eventually notice that it is no longer there. Many blessings & favor to you.
For God hath not given us the spirit of fear; but of power, and of love, and of a sound mind. (2 Timothy 1:7)