Following a diversion due to fumes in the cockpit, the Airbus A320 aircraft landed at Cork Airport (EICK) at 13.00 hrs on 2 November 2017. Emergency services met the aircraft on the runway and after a short assessment, the aircraft taxied to stand. When the aircraft was parked on stand the Commander directed the passengers to disembark the aircraft immediately. The Commander had intended that an expedited disembarkation be performed. However, some of the passengers opened the emergency overwing exits and disembarked using the escape slides. There were no injuries, but a passenger later became unwell and was taken to hospital.