Asbestos is a naturally occurring mineral that was commonly used in building materials due to its desirable properties - it is a good insulator, fire-resistant, and strong. Asbestos was used in various products such as pipes, tiles, ceilings, insulation, and roofs. However, it poses a significant health risk to humans when inhaled.

Asbestos particles are tiny and can easily enter the lungs when breathed in. When inhaled, asbestos fibers can cause serious and fatal illnesses such as lung cancer, asbestosis, and mesothelioma. The risk of asbestos exposure is highest in industires and buildings constructed before 1999, when asbestos use was banned.