: India is a rapidly developing country and automobiles plying on roads are increasing each day. This has led to an increase in petrol pump stations and petrol pump workers and also exposure of petrol pump workers to vapours of petrol and gases from exhaust of automobiles. Petrol vapours and gases from automobile exhaust have a deleterious effect on the respiratory system. In the present study an attempt has been made to study the effect of inhalation of petrol vapour and gases from automobile exhaust on lung functions of petrol pump workers.