For me eating is an over all sensorial experience, anything that slightly disturbs my senses is sure to go on the "I do not like list".
Whenever try to eat foods with unfavorable textures such as liver or prawns, I immediately get a terrible sensation in my teeth and I am instantly unable to swallow!
Smell also cause a problem when it comes to including these food types in my diet . Anything that has a strong pungent smell is automatically on my "yeuck list". Foods like fish, eggs and lamb al big no no's. The smell of them even cooking kills my appetite and gives me the sensation that I am going to hurl!