Your sense of smell is a fundamental part of life as most of us know it.So what happens when it disappears? When Paola Totaro lost her sense of smell to Covid in March 2020, she found herself trapped in a sensory vacuum. In a quest for answers, she embarked on a journey of discovery to unravel the mysteries -and eccentricities - of the fifth sense. From the theories of ancient philosophers to the cutting-edge laboratories...