When I was very young, we moved to a new house. I remember walking through the house, bare of any furniture, and going into my new room. The only thing in there was my kid table and chairs and some toy dishes.* And the room smelled like a mix of lemon cake and sherbet. As an adult, I am obsessed with this smell. I have never actually found anything to match it; but I have a candle called "lemon parfait" that comes close.
*I can't say with certainty that this was in fact a memory and not a dream. But I no longer want to know which one- it may crush me.