
Engine exhaust emits a pungent smell due to reasons such as cold start-up, poor fuel quality, and incomplete combustion of the air-fuel mixture. Here are the related details: 1. Car Engine: It is the device that provides power to the car, serving as the heart of the vehicle, determining its power, fuel efficiency, stability, and environmental friendliness. Depending on the power source, car engines can be categorized into diesel engines, gasoline engines, electric motors for electric vehicles, and hybrid systems, among others. 2. Hazards of Vehicle Exhaust: Hydrocarbons can form highly toxic photochemical smog, which is harmful to human health and can produce carcinogenic substances. The white smoke generated can damage livestock, fruits, rubber products, and buildings. Certain compounds are even more toxic than carbon monoxide, harming human eyes and lungs, contributing to photochemical smog, and being a major component of acid rain, which can turn plants from green to brown and eventually cause widespread death.


