Smoking is a leading cause of respiratory disorders. Smoking cessation is crucial for improving and even for curing many respiratory diseases. Smokers with respiratory diseases can suffer from comorbidities and a higher degree of nicotine dependency than ‘healthy smokers’. For this reason, smoking cessation services (SCS) should be an integral part of a chest unit. The SCS must be run by professionals with expertise and must be well-equipped. They should provide cessation support for all patients who smoke, and educational programs for health professionals. They also have a role in investigation of new treatment strategies.