The other day in the Y locker room I told the woman next to me how nice she smelled. Well, it turns out that her olfactory nerve doesn't work very well (she can't taste very well, either), and she often worries that she smells bad. She couldn't stop thanking me for reassuring her.
What are the odds!
I told her how a scent can instantly take me back to a specific time and place, and she said yes, smell and memory are closely linked. Indeed, the first thing the doctors tested her for was memory loss or incipient Alzheimer's (negative).