At fifty-year-old Hilltop Labs in Cincinnati, odor tests are conducted daily on axillae (better known as armpits), breath, feet, cat litter, and diapers. Here a test is being performed on a subject who has followed strict protocol for the deodorant efficacy study. Betty Lyons began her career thirty-five years ago when she herself was a subject. She then trained for almost a year and is still tested monthly to measure her acuity. Odors are judged on a scale of one to ten, and most odor judges are women: they are able to make finer distinctions.