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The rising urbanization and industrialization in several countries is massively pushing up the air pollution levels. As per the findings of the World Health Organization (WHO), “more than 50% of the world’s population live in urban areas.” Furthermore, the organization estimates that this share would rise to 70% by 2050. Increasing urbanization is usually associated with surging construction activities, rapid industrialization, and rising road traffic, which are some of the biggest emitters of hazardous and toxic gases.