The olfactory tract may be allowing coronavirus infection to reach the central nervous system. Depressed mood and anxiety as psychological symptoms had been an 'unexpected finding'.
Data scientists suggest that Google search trends can be indicative of COVID-19 symptoms. According to Seth Stephens-Davidowitz, the number of Google searches on "loss of smell" and "eye pain" were at par with the number of existing coronavirus cases.
Recently conducted studies present that loss of smell, also known as Anosmia, or diminished sense of taste or ageusia, have both occurred as abnormal revealing signs of COVID-19, an infectious disease which has now infected more than 300,000 and killed over 16,000 people worldwide.