'If people smoke outside the entrance it blows back in. This is a smoke free hospital and it should be in the grounds too. 'Patients and visitors, including new born babies and those arriving by ambulance, often have to pass through cigarette smoke at our hospital entrances, which is totally unacceptable. 'Our goal is to have smoke free sites, and the ability to broadcast these messages is a crucial step towards this. 'Non-smoker Shirley Parker, 67, a former sales assistant visiting the hospital, believed the new initiative was the 'best thing that could happen'.