Fish-Odor Syndrome is a rare condition which causes individuals to emit an
odor similar to rotting fish. Poor teacher Tammy Gobin wondered why people
recoiled from her in disgust telling her she stunk like dead fish until she
learned she has Trimethylaminuria, or fish malodor syndrome -- which makes
people smell repulsive:

http://www.10news.com/news/16143045/detail.html (story with video).