Cigarette smoking is not only injurious to the person who is smoking. But it is equally injurious to people indoors who inhale second-hand smoke.


Incomplete combustion of fuels in various home appliances such as stoves, furnaces, etc. release CO and PM.

Air fresheners and cleaning agents are a potential source of VOCs. If used in excess amounts, they can cause headaches, nausea, etc.
Cooking activities can emit various air pollutants. Humidity levels inside the home can increase when more water is used in cooking.

These are O3 emitters in a home or office setting. Ozone levels, when exceeding the limits can cause various health effects.


This acts as a stressor for respiratory disorders as well as a trigger for asthma attacks. Therefore, animal contact must be reduced as much as possible

Waste generated at construction and destruction activities substantially increase PM2.5 and PM10 levels in the air, hence in the nearby areas.
Industries and power plants are the main source of air pollution sources outdoors. Emissions from power plants cause photochemical smog.

Emissions from burning garbage produce various toxic gases and air pollutants such as CO, CO2, NO2, Smoke, dust, etc.


Unpaved roads emit particulate matter, PM pollution (PM2.5, PM10), dust, and debris. Hence, it can increase the overall PM levels of that area.

These are natural sources of outdoor air pollution. Because they emit carbon monoxide, black carbon, etc. which is injurious to wildlife as well.
Pre-processing and processing of oil and bricks emit various pollutants including toxic metals, particulates, toxic gases like methane, etc.


Particulate Matter...

Carbon Monoxide (CO)...

SO₂ is a pungent...

(NO₂) is a reddish...

(CH₄) is a colorless...
