Individuals passing through a collection area may also have particulates embedded on their clothing or bodies, which can become dislodged thereby becoming an airborne contaminant.
Solid wood products, particularly flooring, are often specified in environments where occupants are known to have allergies to dust or other particulates.
Perhaps only 10 centimetres or more of cultivatable soil has accumulated over the past 10,000 years, but what remains underneath is fine clay particulates.
These dangerous pollutants are known as the criteria pollutants, and include ozone, particulates, sulfur dioxide, nitrogen dioxide, carbon monoxide, and lead.