Lack of smell and taste symptoms of Covid19

The American Academy of Otolaryngology on Sunday posted information on its website saying that mounting anecdotal evidence indicates that lost or reduced sense of smell and loss of taste are significant symptoms associated with Covid-19, and that they have been seen in patients who ultimately tested positive with no other symptoms.

These are often caused by nervous system disorders.
ANd here it is in the PubMed for covid19-
"Increasing evidence shows that coronaviruses are not always confined to the respiratory tract and that they may also invade the central nervous system inducing neurological diseases."
[link to www.unboundmedicine.com (secure)]

Another symptom is anxiety and sleeplessness. Horrible headache.