Hi,
The commonest cause of loosing smell and taste now a days is COVID-19 infection or some other viral infection. Hence, I would advise you the following:
* Consult at a COVID center
* Get nasopharyngeal swab for corona infection, relevant tastes of blood, get a clinical evaluation to find any other routine causes
* Get started on symptomatic treatment like anti-inflammatory medicines and specific treatment in the form of
antiviral medicines as would be advised by your doctors
* Continue treatment for MS and get
MRI and such investigations as would be suggested
* Complete the courses till cured
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. T. Chandrakant, General Surgeon