Loss of smell

Has anyone ever lost their sense of smell?

I didn't lose my sense of smell even during COVID-19, but after catching a cold in June, I went to the ENT doctor for a month without any improvement. The doctor said that since it is a neurological issue, they don't know what will happen. That is truly despairing news. It has been over three months now, and I still cannot smell anything at all. I am diligently training with an olfactory kit morning and evening, but there is no sign of improvement. Living like this is truly agonizing. Will I lose it forever? I am anxious. I guess you could say I have lost the will to live.