Bioaerosols and composting
The composting process relies on the proliferation of micro-organisms to decompose solid organic waste feedstock in order to produce a stable, organic material (compost). However, this process releases these micro-organisms into the lower atmosphere, where they are known as bioaerosols. Bioaerosols can be micro-organisms, including bacteria and fungi or their constituent parts . Bioaerosols are sufficiently small (Figure 3) to penetrate into human lungs. Some bioaerosols therefore have the potential to cause health effects, particularly with people who have suppressed immune systems or pre-existing conditions, such as tuberculosis.