Air Pollutionair pollution facts vs myths thumbnail

Air is dynamic and many external factors can influence the natural composition of air. These include natural as well as human related reasons that can alter the natural composition of air, and affect the air quality. The air quality can change over different geographical areas depending upon the physical factors that exist at a specific location. This deterioration of air quality due to various natural and man-made reasons is known as air pollution. But is it really that harmful that many believe it to be, is air pollution a fact or a myth? Let’s find out.

There are a lot of misconceptions regarding air pollution out there. Despite the widespread claims to the contrary, air pollution is just as harmful to health.

Some of the air pollution myth/fact are as follows:

1. There is no such thing as indoor air pollution

We spend more than 90% of our life indoors. Indoor air can be as bad as the outdoor air, even worse if proper methods and mitigation strategies are not followed. In enclosed spaces it becomes even more essential to monitor and maintain the indoor air quality. Women and children spend most of their time in households, hence affected the most from household emissions.

Many factors can affect the indoor air quality including the ventilation rate, number and variety of sources a place is exposed to, and many more. These sources are different on the basis of where they exist.

For example; a typical home environment will have different air pollutants and sources as compared to workspaces, hotels, and many other indoor environments. 

Air pollution sources present inside a household:

air pollution sources in house
  • Cooking- CO, NOx, VOCs
  • Tobacco smoke- VOCs
  • Unmaintained gas appliances- CO
  • Carpets- Particulates, mould spores, lead, dust mites,Pet dander, dust.
  • Paint- VOCs
  • Furniture (especially new furniture)- HCHO

  Some air pollution sources present in classrooms/offices:

air pollution in schools
Air pollution sources in a school setting
  • Occupancy rate- More people means more CO2 in a room, and higher chances of spreading of viruses and infections
  • Cleaning agents- VOCs
  • Paints, markers, and hobby craft- HCHO, and TVOC
  • Photocopiers and printers- O3
  • Insulation material, floor or ceiling tiles: Asbestos

WHO facts regarding indoor air quality:

  • In 2020, household air pollution was predicted to cause 3.2 million deaths per year, including approximately 23,000 deaths among children under the age of five.
  • The use of kerosene or solid fuels for domestic energy needs results in poor indoor air quality that contains carcinogens that are responsible for about 11% of lung cancer deaths in adults.
  • 23% of the deaths are caused due to strokes from exposure to indoor air pollution.
indoor air pollution facts
Indoor air pollution data by the WHO

2. Only prolonged exposure to air pollution is harmful

It is one of the most common air pollution myths that only prolonged exposure to air pollution is harmful to the human body. Air pollution can and will affect a person’s health even in the shortest intervals of time. These are known as short-term air pollution effects. These include symptoms like irritation in the eyes, nose, and the throat, headaches, nausea, sleepiness, allergic reactions and many more, that can cause discomfort. 

Some air pollutants are dangerous from others, and even exposure for shortest time intervals can have serious effects on one’s health. These pollutants are PM2.5, NO2, Black carbon, ground level ozone, and methane. 

3. The number of deaths caused by air pollution is overestimated

air pollution statistics
The global death toll from air pollution

A report by the WHO says that more than 7 million people die due to air pollution every year! It is a proven fact that air pollution causes various cardiorespiratory disorders, aggravates respiratory disorders like asthma, affects mental and physical growth in children, triggers strokes, and has effects on lungs and heart. According to the WHO (World Health Organization), air pollution in responsible for:

  • The combined effects of residential and outdoor air pollution are responsible for 6.7 million premature deaths annually.
  • Ischemic heart disease and stroke accounted for 37% of outdoor air pollution-related premature mortality.
  • 18% of the deaths were due to chronic obstructive pulmonary disease (COPD).
  • 23% of the deaths were caused due to acute lower respiratory infections.
  • 11% deaths were due to cancer within the respiratory tract.

4. Wearing any mask will protect you from inhaling air pollution

Air pollution is a serious issue, where 9 out of 10 people are inhaling polluted air that exceeds the WHO’s air quality standards. That is, if suitable mitigation methods are not implemented to lessen the consequences of air pollution, we may become part of the mortality statistics. To combat air pollution effects, an effective N-95 mask will help you breathe clean air. It would not only save you from inhaling dust, pollen, allergens, but also virus and infection inhalation. 

affective air pollution mask
Effective N-95 anti-air pollution mask

Improper masks such as surgical masks and cloth masks are not as effective. It’s like bringing a knife to a sword fight! 

5. Only the winter months experience poor air quality

Air is dynamic, and air pollution can exist irrespective of the season. Winter season has a significant effect on air pollutants, but that does not mean that air pollution around summers isn’t as dangerous. The visibility of air pollutants is much more visible around winters due to a phenomenon known as inversion, as grey skies become more visible. Otherwise, air pollution is as harmful in summers as in winters. 

air pollution in winters

According to a Greenpeace study that analyzed air quality in every Indian state throughout the year, PM, O3, and NOx levels were consistently higher than the annual average permitted by the CPCB. 

6. Only sensitive groups need to worry more about the air pollution

Effects of air pollution are not limited just to a specific category of people. Each category of people experience the adverse effect of air pollution. Sensitive groups experience it the most, but air pollution can affect a healthy individual as well. 

Sensitive groups include children, people with underlying health issues, pregnant ladies, and old age people. 

Children: Air pollution has an adverse effect on cognitive, neurological, tissue, and cell growth.

People with underlying health issues: Air pollution acts as a trigger to various underlying issues such as heart disorders.  Air pollution can exacerbate existing poor health.

Pregnant ladies: Air pollution affects the prenatal growth and affects the expectant mothers as well.

These are just a proportion of the population that are affected by air pollution a little more than a healthy individual, but it does not make that individual immune to the effects of air pollution. Air pollution affects everyone, sensitive groups are more affected than others.

7. The biggest cause of air pollution is vehicular pollution

Vehicular pollution plays a major role in air pollution composition, but it is not the biggest cause of air pollution. In India, the biggest contributor of air pollution is construction and dust (59%), followed by the waste burning activities. According to Chandra Bhushan, an environmentalist, India burns approximately 2 billion tones of substances to either dispose of waste or generate energy. Coal burning, lignite (for electricity), biomass (mainly for cooking), and agricultural residue (waste disposal) account for three-fourths of this; oil accounts for roughly 10%. We are overlooking the forests for the trees by focusing all of our efforts on reducing automotive emissions—a relevant but insufficient requirement for pollution control.

major cause of air pollution

8. When there is visible air pollution, it is dangerous

Visible air pollution is dangerous for our health, and can cause various short and long-term health hazards. But invisible air pollution is even worse. They are silent serial killers, you won’t even know they