To sweat or not to sweat? Was sweating good or bad? Was it a treatment or a symptom? Was it something to be encouraged or prevented? The answer to all these questions is a resounding ‘Yes’. In this episode we explore the strange history of sweating sickness, what arsenic can do to your armpits and the creation of a market for underarm shaving. We also explore the history of deodorant – and its cynical marketing to women to improve their attractiveness and to men in the 1920s as a way to avoid unemployment and poverty.