Olfactory reference syndrome is a psychiatric disorder in which a person believes they smell bad even when there is no actual body odor.
Abbreviation of 自己臭恐怖症 (jiko shū kyōfushō), literally 'self-odor phobia'. The exact derivation is uncertain, but the kanji 自 (self), 臭 (smell/odor), and 症 (condition/syndrome) are conventionally associated with the meaning.