I’ve always felt so intimately connected to Chanel No19 that I swear you could cut me open and find it running through my veins. But a memory that still lingers with me proved that scent can touch you on an almost-metaphysical level. On a  warm evening many summers ago, at a lovely outdoor party, an elegant older lady walked past me and in doing so left behind a gentle trail of No19. My perfume. And in that brief moment,I had this extraordinary out-of-body experience of having somehow just walked past myself. The thought that it could be her scent – or anyone else’s – felt as unfeasible to me as having someone else’s fingerprints – or the same signature. If I ever get my DNA tested, I expect to see Henri Robert’s formula for No19 as very much part of my genetic makeup.