Personal Chemistry Affecting Fragrance Perception? A Question of Politics and Marketing

A dear reader asks the million dollar question: "Is it true that if you can't smell a fragrance on yourself that it either doesn't work with your chemistry OR it works like magic? I've heard both synopses from sales clerks." I bet you heard some version of this before. You might even have said it yourself casually: "I can't wear this as it doesn't mesh with my personal chemistry" or "Oh,