Losing your sense of smell isn’t usually caused by anything serious, and may get better by itself within a few weeks, added the NHS.
It could, however, be caused by a coronavirus infection, and anybody that notices a change to their sense of smell or taste should self-isolate at home.
It could also be caused by a cold, allergies, sinusitis, or even nasal polyps.
Hyposmia is more common as you get older and can be treated with some medications.
Hyposmia is a decreases sense of smell.
source: express.co.uk