With children, pets or elderly at home, it is essential to keep the house free of any gaseous pollutants. Hence, ventilate the house for one hour every day.
 

With respiratory illnesses, pulmonary diseases or mental health disorders, it is essential to keep your sleeping space completely free of dust & smoke.
 

For your home, ensure that your kitchen smoke and fumes do not enter your living space such as bedrooms or dining rooms, as this can lead to a massive drop in air quality
 

On an individual level, breathing exercises like pranayama can help you when air pollution is very high.