It's an interesting issue, never heard of a horse with that type of problem. What I've done with horses that are not used to being bridled, is to turn the experience into a pleasant one. You want him to learn that anything related to the bridle means it's going to involve something he enjoys, where it be a good groom, or feed, his favorite treats.
I would look at also going back to basics with this one. Start working with his face more, brushing, work with his ears. Play with other tack or halter items with removing and putting on. Involve feeding during that time as well.
Once the horse associates feed goodness with the issue you're having, you can slowly remove the feed.
Years ago I owned and worked with a colt who you could not halter because he would panic. By the time I was done with him, he was putting his head in the halter to come spend time with me. Same principles for bridling.