In this episode, Simon Hunter speaks with Dr Svetlana Tretsiakova, Principal Investigator of the InToxFire Project at Ulster University, to explore the real health risks firefighters face from toxic exposure on the fireground. The discussion examines the scientific backdrop to firefighter health concerns, including exposure to toxic gases, particulates and fire effluent, and how these contaminants interact with protective clothing. Dr Tretsiakova outlines the purpose of the InToxFire research, the challenges of measuring contaminant transfer through PPE, and the behavioural and operational factors that influence exposure risk. This episode also addresses the importance of education, evidence-based decision-making and collaboration between researchers and industry to better understand and reduce occupational risk. This conversation is intended to inform and educate, drawing directly from current academic research to support a deeper understanding of firefighter health and protection.