What is another word for small-particle pollution?
Pronunciation: [smˈɔːlpˈɑːtɪkə͡l pəlˈuːʃən] (IPA) 
Small-particle pollution, also known as fine-particulate matter or PM2.5, is a type of air pollution that consists of tiny particles smaller than 2.5 micrometers in diameter. These particles are known to be hazardous to human health, as they can penetrate deep into the lungs and enter the bloodstream. In order to describe this type of pollution, there are several synonyms that can be used, such as particulate pollution, micro-pollution, ultrafine pollution, or nanoparticle pollution. Regardless of which term is used, all of them refer to the same dangerous and harmful pollution that continues to plague many cities around the world.
