Psychology can't make you smell something from a distance. You're not sensitive because you bathe yourself in those chemicals all day. Ever notice when you cook something in the house how fast you get used to it and don't smell it anymore? That's what happens when you're breathing chemical perfumes all day from your laundry, your shampoo, your dish soap, scented candles, air "fresheners," household cleaners, etc. If you get rid of all those carcinogenic perfumes for a month your nose will recover and you'll smell what a chemical soup most people live in all the time. And they wonder where all the cancer comes from.