"No sooner had the warm liquid mixed with the crumbs touched my palate than a shudder ran through me and I stopped, intent upon the extraordinary thing that was happening to me." That's ACSH friend Dr. Michael Shaw channeling Proust on the power of smell. Of course, it cuts both ways. Body odor? Why do we have it? Do deodorants work? How about hygiene? Is "old-person smell" real? Just take a sniff of what's in this fascinating piece.