Most of my hallucinations are olfactory. A few days ago, out of nowhere, I smelled freshly baked sugary donuts with absolute vividness that I thought I had to be in a bakery and not my workplace. I smell roses a lot.
I also smell certain months. Certain times I smell the month of October even if it's not October. It has a very powerful smell and has so many meanings attached to it. Every once in a while I can smell Fisherman's Wharf in San Francisco.
If the breeze is just so I can smell my hometown, and sometimes in the breeze I can smell a grassy meadow blooming with dandelions connected to my hometown.