By JOE PINKSTONE FOR MAILONLINE PUBLISHED: 07:42 EST, 4 March 2021 | UPDATED: 07:42 EST, 4 March 2021 From a high fever to a loss of sense of smell, Covid-19 is associated with a range of unpleasant symptoms. Now, a new study has warned that infection with the coronavirus can also lead to swollen salivary glands in the mouth. Researchers studied 122...