Is smog an antiseptic for air purifiers?

　　In recent years, smog has entered our lives, adding a companion to our life, that is, air purifiers. It can be said that smog and air purifiers are inextricably linked. Because smog has promoted the growth of the air purifier industry, it has also prompted everyone to pay this expensive "air fee". So can it be said that smog is the "antiseptic" of air purifiers?

　　In fact, when faced with this problem, we can change our thinking. If the smog disappears, can we not use air purifiers? Obviously not, because air purifiers first originated from firefighting purposes. In 1832, a man named John and Charles Dean invented a new type of smoke protection device, which allowed firefighters to avoid smoke attack when putting out fires.

　　So was there smog at that time? Maybe this explanation will be misunderstood, because the air purifiers at that time may not be as advanced as they are now. However, do we really understand the true meaning of air purifiers?

　　Air purifiers, as the name suggests, are used to purify the air, and their essence is to remove polluted air, and finally release fresh air through a series of tasks. And is there only smog in the polluted air? Obviously not. And how did the smog come about? I believe everyone has understood, the most important are heavy industry, automobile exhaust and so on. So have these not existed before? And why hasn't there been smog before?

　　Whether it is heavy industry or automobile exhaust, these have existed for a long time. The only reason why smog did not appear before is because it has not yet reached the bearing point of nature. But it cannot be said that there was no smog in the past, because the smog in the past was only invisible to our naked eyes, so why did it evolve into what it is today? In fact, the biggest factor is the human heart. People's hearts have led to an increase in heavy industry emissions. Although there is no violation of the pollution discharge standards on the bright side, it is actually a dark warehouse. The increase of private cars shows that people's living standards have been improved, which is an inevitable trend of social development. But it also created the abuse of private cars. The increase in exhaust emissions, while the green plants have not been increased accordingly, makes the air pollution gradually serious. It also contributed to the change from the previous smog pollution to today's smog.

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