There was an interesting NYT article on June 17, 2009 where some niche companies are claiming one can lose weight by saturating your sense of smell... either by enhancing or decreasing. Read the article here . Personally, I would think that decreasing your sense of smell would do more to help as this would decrease your sense of taste making food taste more like cardboard and/or sand. There is a medical condition called " anosmia " where a person has completely lost their sense of…