- Emetophobia is an intense and irrational fear related to vomiting, either one's own vomiting, seeing others vomit, seeing vomit, or feeling nauseous. - It is a specific phobia recognized in clinical psychology. - Other options represent different phobias: Arachnophobia (fear of spiders), Acrophobia (fear of heights), and Cleithrophobia/ Claustrophobia (fear of being trapped, which can relate to tunnels).