Key points
  1. Parosmia is associated with clinically relevant improvements in discrimination and identification function in patients with smell loss receiving olfactory training.
  2. Clinically relevant recovery of overall olfactory performance was more likely in those that had lower baseline olfactory function at initial visit and in postinfectious smell loss compared to posttraumatic or idiopathic causes.
  3. Recovery of suprathreshold olfactory function discrimination and identification was distinct from threshold improvements.