Re: Smelling smoke
Phantom smells from brain tumours are caused by seizures, not the tumour itself. When they happen, due to seizures, the smell is intense. It will completely overwhelm your senses and it would be as if the item/thing causing the smell is wedged in your throat (you'd also "taste" it). It would also be accompanied by other symptoms such as rising sensation in stomach, vertigo, word finding inability etc. It would be happening several times a day (minimum) and would leave you feeling very out of it afterwards.
Brain tumours were my #1 fear until early this year (since then I never think about them now) and I've researched the condition and associated symptoms very heavily.
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Healthcare Professional with Health Anxiety
Be kind, for everyone you meet is fighting a hard battle