PM is a mixture with physical and chemical characteristics that vary by location. Its sources are man-made or natural. Air pollution therefore varies from place to place. Spending a day on the streets of Beijing, for example, will have the same negative effect on your respiratory tract as staying 30 days in Paris. It should be noted, however, that people will react differently to poor quality air, depending on their sensitivity.
When inhaled, PM10, PM2.5 and PM1 impact the body in different ways. Their ability to be trapped in the body, where they may form deposits, will depend on their size and whether they can pass through the walls of our airways.