What are the hazards of automobile exhaust to humans?
3 Answers
Automobile exhaust poses the following hazards to humans: 1. Causes respiratory infections and leads to decreased lung function; 2. When concentration exceeds standards, it can cause poisoning symptoms; 3. Affects heart rhythm and may induce myocardial infarction; 4. Mild cases cause headaches, dizziness, and slowed reactions, while severe cases lead to decreased neurological function; 5. At certain concentrations, it can cause poisoning or even death. The main pollutants in automobile exhaust are carbon monoxide, hydrocarbons, nitrogen oxides, sulfur dioxide, lead compounds, benzopyrene, and solid particulate matter, which can cause photochemical smog. The CO, NOx, SOx, unburned hydrocarbons (HC), particulate matter (PM), and odorous gases emitted by vehicles pollute the air and pose significant hazards to humans, animals, and plants.
As a car enthusiast, I've always been concerned about the hazards of exhaust emissions, and my personal experience tells me it's really harmful. Exhaust contains large amounts of pollutants such as carbon dioxide, which exacerbates global warming, making summers hotter and winters more erratic; nitrogen oxides can cause acid rain, damaging forests and crops; carbon monoxide steals oxygen, leading to dizziness and fatigue; particulate matter, when inhaled, can easily cause asthma and coughing, with long-term exposure increasing the risk of lung cancer. The elderly and children are more vulnerable, and on smoggy days in cities, breathing becomes difficult. I recommend everyone to drive less and try public transport or carpooling, and promoting electric vehicles would be much better.
Exhaust emissions directly harm health, especially for urban residents like me who are exposed to them daily. The benzene and formaldehyde they emit are carcinogens that can lurk for years and cause diseases; particulate matter enters the alveoli, triggering inflammation and heart disease; heavy metals like lead accumulate in the body, affecting the nervous system. Long-term exposure can lead to developmental delays in infants and make the elderly more susceptible to dementia. Controlling the harm requires policies to limit emissions, and individuals should ride bicycles more often and ventilate their spaces.
