Does brain smell indicate Alzheimers?

Hi guys. Last winter I had strong brain smell, havent been able to sleep for several months, tried various meds but no luck. Am 40 years old and use to take substances and my last substance was methadone but before that espranor, which I think gave me side affects i.e bulging eyes, panic attacks, constant urination etc.

Suprisingly I did not get withdrawals from methadone, I did have burning headaches.

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I have sinitus which is contributing to ringing between my ears. Doctors don't know what else to do.

Is sinitus has travelled to the brain how can they rectify this? am worried anestetic not going through as it did not with my tooth infections, which again suprisingly I feel no pain.

I don't feel any coolness on my face either. Can't laugh or cry, I did have CT scan and MRI that showed Septum cyst but Doctors say that was since birth.

Even mental health people don't know what to do. How can they rectify sinitus that does not go away with medication?