I don't know the reason exactly what happened, but suddenly I lost my smelling sense. I can smell only when it is heavy. Other times, I could not sense it. I thought initially if it is covid and tested, but got negative report. It's been 2months. I am worried visiting hospital in Hyderabad, as there a lot of covid cases and hospitals are fully occupied in recent times. Kindly let me know what test I have to take exactly to find out the problem.