Hello, Welcome to Health Care Magic. I understand your concern. I am Dr Alok Sinha, MD Psychiatry from India. I will try to help you with best of my effort. You had a very bad experience recently causing significant suffering (severe pain and burning sensation in chest). Now you are having the fear of having hot food in your inner mind, although you may not be aware of it. It appears that your symptoms are happening in the background of your past traumatic experience. You relive these symptoms due to recall of this bad experience. Hot food is a triggering factor for your reliving experience. If a person like you comes to me I suggest them desensitization technique. In this technique a person has to gradually expose himself to higher degree of threat (in your case simply it is having try luke warm food for few weeks then gradually trying hotter foods over next few months). This process is slow but curing. You may also consult a psychologist for further therapy. Hope this answers your questions. I wish you all the best.