Frequency of qualitative OD by aetiology
We first sought to determine the presence of parosmia and phantosmia for
each aetiology group separately. Parosmia was most frequently present in
postinfectious OD (40.5%), followed by posttraumatic OD (25.8%), and
idiopathic OD (17.7%). In contrast, phantosmia was most commonly
present in idiopathic OD (25.8%), followed by posttraumatic OD (19.3%)
and postinfectious smell loss (13.7%).