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Cochrane COVID-19 Study Register
Study record
NCT05384561First Published: 2022 May 24Updated Date: 2022 May 24

L'entrainement Olfactif Comme Traitement de la Dysfonction Olfactive Post COVID-19

  1. Study Type
  2. Interventional
  1. Study Aim
  2. Treatment and Management
  1. Study Design
  2. Parallel/Crossover
  1. Intervention Assignment
  2. Randomised
Reference record

Olfactory Training as a Treatment for Olfactory Dysfunction Post COVID19

Universite du Quebec a Trois-Rivieres
First Published (first received 2022 May 20) (
Trial registry record
No Results
Olfactory dysfunction is a defining symptom of COVID-19 infection. Studies have demonstrated improved olfaction in patients with post infectious olfactory dysfunction after an olfactory training (OT). The aim of this study is to assess the clinical outcomes of olfactory training (12 weeks) therapy in the treatment of persistent olfactory dysfunctions after COVID-19. Specially, we aim to compare the effectiveness of two different olfactory training (different odors) with a placebo group. A group will train themselves with 4 scents (rose, orange, clove and eucalyptus) and another group with 4 different scents (cheese, coffee, strawberries and lemon). The placebo group will train themselves with an odorless substance. Olfaction sensory evaluation will be performed by using different olfaction tests (Sniffin' Sticks and UPSIT) and complete questionnaires to assess olfactory perception and particularly parosmia and phantosmia