Oddly enough, not as weird as the title makes it sound. There's always that one smell. You smell that smell, maybe in passing, maybe while out and about with people, and nostalgia punches you directly in the face. You lapse into a memory coma while your friends look on in concern. That smell. Maybe there's more than one. My main nostalgic smell is sunscreen. I automatically associate it with going to the beach as a child -I'm a redhead, so applying sunscreen was practically religious. So what are your smells?