Synonyms for ORS, many historical, include bromidrosiphobia, olfactory phobic syndrome, chronic olfactory paranoid syndrome, autodysomophobia, delusions of bromosis, hallucinations of smell and olfactory delusional syndrome. By definition, the many terms which have been suggested in the dental literature to refer to subjective halitosis complaints (i.e. where a person complains of halitosis yet no odor is detectable clinically) can also be considered under the umbrella of ORS. Examples include halitophobia, non-genuine halitosis, delusional halitosis, pseudo-halitosis, imaginary halitosis, psychosomatic halitosis, and self halitosis.