In October of 2017, nine Victorians tragically died as a result of or due to complications associated with thunderstorm asthma. The disastrous weather event saw emergency services become overwhelmed with desperate calls from people suffering from acute respiratory problems. While we have long known that weather conditions can play havoc with the symptoms that people with asthma and allergies experience, why did it cause nine people to lose their lives? This session with Professor George Braitberg is not to be missed, as he recounts events from his first-hand experience on the ED floor of the Royal Melbourne Hospital.