| 1-1 |  
 App 1-1  Ref. |  
  https://www.nature.com/articles/s41591-020-0868-6 
 |  
 
  | 1-2 |  
 App 1-2  Ref. |  
  http://www.digitaljournal.com/tech-and-science/science/essential-science-coronavirus-is-the-nose-a-route-of-infection/article/5711 
 |  
 
  | 1-3 |  
 App 1-3  Ref. |  
  https://www.entnet.org/sites/default/files/uploads/sedaghat_2_olfactory_dysfunction_and_sinonasal_symptomatology_in_covid-1 
 |  
 
  | 1-4 |  
 App 1-4  Ref. |  
  https://www.entnet.org/sites/default/files/uploads/sedaghat_2_olfactory_dysfunction_and_sinonasal_symptomatology_in_covid-1 
 |  
 
  | 1-5 |  
 App 1-5  Ref. |  
  https://www.webmd.com/allergies/features/adult-onset-allergies#1 
 |  
 
  | 1-6 |  
 App 1-6  Ref. |  
  https://kidshealth.org/en/parents/allergy.html 
 |