Olofsson is accustomed to defending the significance of smell, which many people seem to take for granted. For evi­­dence, he refers to surveys that asked Americans to choose whether their sense of smell or their pinky toe was more valuable. Half chose the toe. In a 2021 follow-up survey, only 15 percent of responders were on team toe, but Olofsson contends that we still don’t adequately understand or appreciate the “special intelligence of the nose.”