Dr Philip Smith, Digital and Education Editor of Gut and Honorary Consultant Gastroenterologist at the Royal Liverpool Hospital, Liverpool, UK interviews Dr Kurtis Budden, from the Immune Health Program, The University of Newcastle and Hunter Medical Research Institute, Newcastle, NSW, Australia and Professor Philip Hansbro who is also a conjoint there and the Director of the Centenary Institute and University of Technology Sydney Centre for Inflammation, Sydney, NSW, Australia, on the paper "Faecal microbial transfer and complex carbohydrates mediate protection against COPD" published in paper copy in Gut in May 2024.