The majority of Corona victims who lose senses to the virus do not fully regain them even after an entire month’s time.

“When Boscolo-Rizzo and his colleagues followed up four weeks later with the 113 patients who reported sudden onset of those symptoms in the two weeks prior to testing for SARS-CoV-2, they found that 48.7% had complete resolution of their smell or taste impairment, while another 40.7% experienced a decrease in the severity of the symptom. Just 10.6% said there was no improvement.”

https://www.medscape.com/viewarticle/933347