Smell is a very strong stimulus and is the sense most closely connected to our cortex and memories. Babies can recognize the smell of their mother about 2 months before they can recognize them by sight.

When I moved to the Columbia River Gorge, it was a bit like going home.My
Grandparents lived in a continuation of this valley north of the border and the smells here always remind me of my happiest times as a child. Smell is a very strong thing.