Dr Lancelot Pinto, consultant pulmonologist and epidemiologist at the P.D.Hinduja Hospital and Medical Research Centre, sheds light on effects of poor air quality and what early warning signs we must pay attention to. In a chat with mid-day, he also spoke about the city’s deteriorating air quality and its possible connection with the increase in lifestyle diseases, the risks linked to exposure to air pollution, and the efficacy of masks and air purifiers, impact of construction dust on health and lifestyle of the citizens among other things.