I was preparing dinner the other night and washing dishes at the sink when a foul odor seemed to come out of nowhere. “What is THAT?” I shrieked. “What is what?” responded my husband, who was in the kitchen but behind me. “That horrible smell. Where is it coming from?” I turned toward my husband, who was laughing. “I just took some cheese out,” he said. I spotted the cheese, a favorite of mine, and almost instantly the offensive aroma became appealing. How did that happen? I figured Harold McGee, author of Nose Dive: A Field Guide to the World’s Smells, would know.