Is Car Exhaust Serious on the Fourth Floor?

[LeGia]

Car exhaust on the fourth floor is not very serious. Here is relevant information: 1. Emission height: The impact of motor vehicle emissions on urban near-surface air quality is much higher than that of fixed pollution sources far from crowds. This is because the height of car exhaust emissions is mainly between 0.3 meters and 2 meters, which is exactly within the human breathing range. 2. Exhaust: Car exhaust contains many pollutants known to be harmful to human health, such as carbon monoxide, nitrogen oxides, and hydrocarbons, which can cause acute damage or long-term adverse effects on the human respiratory, immune, blood, and genetic systems. Among them, soot particles carrying a large number of harmful pollutants, when inhaled by humans and retained in the alveoli, can exacerbate the toxic effects of other pollutants.