What are the harmful gases emitted by vehicles?

[OMary]

Mainly include: carbon monoxide, hydrocarbons, nitrogen oxides, sulfur dioxide, smoke particles, and foul odors. Smoke particles contain certain heavy metal compounds, lead compounds, black smoke, and oil mist. The hazards of harmful gases emitted by vehicles are as follows: 1. Excessive emission of harmful gases from vehicles can cause a sharp increase in urban temperatures. Since the harmful gases emitted by vehicles include carbon dioxide, excessive carbon dioxide can lead to the greenhouse effect and damage the ozone layer. After the ozone layer is destroyed, the sun will directly irradiate the Earth's surface, causing temperatures to rise. 2. It can harm human health. After inhaling vehicle exhaust, the human respiratory system can be damaged. 3. It can disrupt the Earth's ecology and climate. In recent years, the emission of harmful gases from vehicles has increased, often leading to phenomena such as acid rain and black rain, which can affect the extinction of organisms.

[JesseDella]

As a driver who's on the road every day, I've noticed that vehicles emit quite a few harmful gases, typically falling into three or four main categories. Carbon monoxide is the most dangerous—it's colorless and odorless but can easily cause dizziness or even suffocation because it's produced when gasoline doesn't burn completely. Then there are nitrogen oxides, which sound technical but are actually those pungent smells that make you cough and your eyes water, especially in traffic jams, affecting respiratory health. Hydrocarbons, like benzene and formaldehyde, contribute to acid rain and smog, damaging vegetation and polluting the air. Finally, particulate matter, such as black soot, can get lodged in your lungs and cause chronic illnesses. Although carbon dioxide isn’t directly toxic, excessive emissions contribute to the greenhouse effect and global warming, making it harmful in its own way. I try to maintain a steady speed while driving, avoiding sudden acceleration or getting stuck in traffic, to reduce emissions a bit. After all, exhaust problems don’t just harm people—they damage the environment too, so we should start by being mindful ourselves. Keeping your vehicle well-maintained, ensuring the engine doesn’t leak oil or deteriorate, can also make a big difference.

[VonCody]

As someone who cares about the environment, I know that harmful gases in vehicle exhaust mainly include carbon monoxide, nitrogen oxides, and particulate matter, which directly damage air quality. You see, carbon monoxide reduces the blood's oxygen-carrying capacity and can easily lead to poisoning; nitrogen oxides are one of the main culprits of urban smog and can cause acid rain that damages buildings; hydrocarbons contribute to ozone layer depletion through chemical reactions, exacerbating global warming. Every time I see black smoke coming from an exhaust pipe, I think about how these gases harm both people and the environment—especially fine particulate matter, which is invisible but can enter the lungs and cause heart problems. For the sake of the planet, simple measures like using the air conditioning less or avoiding short trips can help reduce emissions. The rise of electric vehicles, which can address these issues, is gaining momentum, so opting for public transport or eco-friendly cars whenever possible is ideal. Policies promoting zero emissions are the future, but starting with ourselves—by regularly maintaining our vehicles and avoiding engine idling—we can all contribute a little to improving air quality. After all, clean air is everyone's responsibility.

[PaigeDella]

As an average car owner, I've experienced unpleasant exhaust smells. Harmful gases like carbon monoxide are more common in older vehicles—when the engine fails, it emits smoke that irritates. Nitrogen oxides produce that pungent odor during traffic jams, stinging the eyes. Hydrocarbon emissions pollute the air and can trigger skin allergies. These issues worsen during high-temperature driving. My maintenance habits are simple: use quality engine oil and clean filters to reduce emissions. Cutting harmful gases isn't just about technology—driving slower and avoiding sudden brakes helps daily. Then there's carbon dioxide: though its daily impact feels negligible, accumulation heats the planet. Avoiding peak-hour driving saves fuel and protects the environment.