With the increasing number of industries around the globe, there is an increase in the level of air pollution. The indoor air pollution has become a threat to the number of people around the world. With increasing concentration of impurities in the air, it has given birth too many types of air born diseases like asthma, bronchitis, and other types of respiratory illness. The polluted air is not present outside, but it is also present inside the house too.
There are sources of air pollution