What about Fear of water? Phobias: xenophobia definition is a bit simplistic; yes 'strangers' but also more towards the fear of foreigners. Usually, used socially and culturally than just 'strangers' but I digress.
50 things you don't need to know, but should read anyways because it's kind of crazy and awesome and it will make you a better nerd! XD and will probably gross you out too. Never eating chocolate bars again.