Olfactory reference syndrome

Olfactory reference syndrome is a mental disorder in which there is a persistent, false belief and preoccupation about emitting abnormal body odor which is foul and offensive to other people. People with this condition often misinterpret others' behaviors, e.g. sniffing, touching nose or opening a window, as being referential to an unpleasant body odor which in reality is non-existent and cannot be detected by other people.