New Delhi, Nov. 26 -- Many people assume closing the car doors shields them from air pollution, but studies show this is not always true. Traffic emissions, dust, and other pollutants can accumulate inside your vehicle, sometimes making in-car air dirtier than outside air. Long-term exposure can trigger headaches, eye irritation, fatigue, and respiratory issues. Children, the elderly, and those with chronic conditions are particularly vulnerable. In cities with severe pollution, sitting in traffic for hours can be comparable to smoking dozens of cigarettes in terms of toxin exposure.

Do you also think that closing the doors and windows keeps you safe from pollution while driving? Well, in busy cities, that's far from true. Traffic emissi...