People have a lot of strange fears! Some things don't seem terrifying at all, but there are people to be afraid of them. One would think swallowing is an ordinary natural process, but...

Phagophobia is a psychogenic dysphagia, a fear of swallowing. It is expressed in various swallowing complaints without any apparent physical reason detectable by physical inspection and laboratory analyses. Phagophobia may lead to (and be confused with) fear of eating, and the subsequent malnutrition and weight loss. In milder cases a phagophobe eats only soft and liquid foods.

More Info: en.wikipedia.org