People are born with synesthesia, and when you’re about a year old you lose it. Only five per cent of people walk around as adults with synesthesia. But the neurons you have now are the same ones you were born with. You can wake them up, and that’s what we’re going to try to do today.
— Perfumer Ron Winnegrad, talking to students at a workshop on synesthesia. Read more at Scents and Sensibility at The New Yorker.