What kinds of pollutants are in the air inside of buildings?
There are three general categories: Chemical. Particulate. And Microbial. Chemical contaminants usually come from cleaning products and from building materials. Particulate pollutants come from smoke, fibers and dust originating inside the building or brought into it from the outside. Microbial contaminants account for about 85% of the harmful pollutants found inside buildings. They are the bacteria, viruses and spores from fungal colonies growing somewhere in the building.
