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Phantom smells: a prevalent COVID-19 symptom that progressively sets in
Christophe Bousquet1, Kamar Bouchoucha1, Moustafa Bensafi2
1Lyon Neuroscience Research Center, CNRS UMR5292, INSERM U1028, University Claude Bernard Lyon 1, CH Le Vinatier, Bât. 462 Neurocampus, 95 boulevard Pinel, 69675, Bron Cedex, France.
Summary
Phantosmia, an olfactory disorder, affects 37% of COVID-19 patients, with women more likely to experience it. Descriptions of phantom smells were predominantly negative, impacting quality of life.
Area of Science:
- Neurology
- Otolaryngology
- Infectious Diseases
Background:
- Phantosmia, a type of olfactory disorder (OD), is a recognized long-term symptom of COVID-19.
- This qualitative OD significantly impacts patients' quality of life.
- Understanding the manifestation of phantosmia in COVID-19 patients is crucial for effective management.
Purpose of the Study:
- To investigate the prevalence and characteristics of phantosmia in individuals who have had COVID-19.
- To analyze the qualitative descriptions of phantom smells experienced by COVID-19 survivors.
Main Methods:
- A large-scale online questionnaire was administered to 4691 COVID-19 patients.
- Prevalence of phantosmia was analyzed.
- Natural Language Processing and sentiment analysis were employed to examine qualitative descriptions from 1723 respondents reporting phantosmia.
Main Results:
- Phantosmia prevalence was 37% among COVID-19 survivors.
- Women, and those with fluctuating, longer-lasting, partial, or progressive OD were more likely to report phantosmia.
- Qualitative analysis revealed predominantly negative smell descriptions (78%), with unique patterns related to smoking status, age, and OD duration.
Conclusions:
- This study provides valuable insights into the prevalence and nature of phantosmia following COVID-19.
- Findings contribute to the medical community's understanding and treatment strategies for this increasing olfactory disorder.
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