The other day, one of the e-mail newsletters I get touted a new inhalable chocolate called Le Whif. "Chocolate without the calories". It sounded like a joke, something out of The Onion. But then, today, The Times ran an article about manipulating the sense of smell as a form of weight loss. In it, one person says “The hypothesis is that if we can alter your sense of smell we can make food less palatable, because the hedonic effect — that is, the pleasurable effect you get from eating chocolate — won’t be there.”
Making food less palatable defeats the point. I feel bad for those who would rather go this route than dabble in the joys of eating. Sorry, but that's what exercise is for!