Do some noises aggravate you?
A sensitivity to a specific noise is not terribly uncommon and often gets triggered by some eating 'noisily' in close proximity.
Those sensitive to the trigger noise can find it disruptive and for some it can lead to a change in behaviour - some people avoid certain places where they know that they will feel uncomfortable.
Hypnosis is a great way of retraining the brain to tune out to those irritating noise triggers so that you feel comfortable and calm once more...