In this episode, NSW Health Pathology mycologist Dr Catriona Halliday shares her insights into the fascinating and sometimes dangerous world of fungi. From life-saving antibiotics to life-threatening infections, fungi play a complex role in human health. Dr Halliday discusses emerging fungal threats like Candida auris, the challenges of diagnosing fungal infections, and why immunocompromised patients are particularly vulnerable. With decades of experience in medical mycology, she offers a compelling look at how these often-overlooked organisms are becoming increasingly relevant in clinical settings.