Retained aspirated foreign body can sometimes get misdiagnosed as asthma, chronic obstructive pulmonary disease (COPD), or lung cancerAspirating an Inert Material: aspirating large inert material coupled with an impaired cough can cause asphyxiaHydrocarbon Pneumonitis: secondary aspiration following vomiting ingested petroleum products – gasoline, kerosene, furniture polish, and other petroleum products used around home environment – can injure lungs and result in hydrocarbon pneumonitisLipoid Pneumonia: is a chronic disorder common among older people who have difficulty swallowing, with aspiration of oily material - mineral oil, cod liver oil, and oily nose drops - as its mains cause

Occupational environmental exposure
Arsenic
Arsenic is classified as an IARC Group 1 carcinogen and is a cause of lung cancer. Workers can be exposed to arsenic through work with some pesticides or in copper smelting. Asbestos
Asbestos is a mineral which was extensively used in the United States to fireproof buildings and textiles, among other items, in the 1950s-1980s. Workers are frequently exposed to asbestos during demolition and renovation work, which can cause asbestosis and/or mesothelioma. Asbestos exposure can also cause pleural effusion, diffuse pleural fibrosis, pleural plaques, and non-mesothelioma lung cancer. Smoking greatly increases the lung cancer risk of asbestos exposure.Residents and workers of asbestos mining centers such as the town of Asbest, Russia experience dangerous exposure to asbestos and asbestos dust. BCME
BCME (Bis(chloromethyl) ether) is associated with small cell lung cancer in workers who have been exposed. Exposure can occur via direct manufacture of BCME or its presence as a byproduct.
Naturally occurring earthquakes
Tectonic earthquakes occur anywhere in the earth where there is sufficient stored elastic strain energy to drive fracture propagation along a fault plane. The sides of a fault move past each other smoothly and aseismically only if there are no irregularities or asperities along the fault surface that increase the frictional resistance. Most fault surfaces do have such asperities, which leads to a form of stick-slip behavior. Once the fault has locked, continued relative motion between the plates leads to increasing stress and, therefore, stored strain energy in the volume around the fault surface. This continues until the stress has risen sufficiently to break through the asperity, suddenly allowing sliding over the locked portion of the fault, releasing the stored energy. This energy is released as a combination of radiated elastic strain seismic waves, frictional heating of the fault surface, and cracking of the rock, thus causing an earthquake. This process of gradual build-up of strain and stress punctuated by occasional sudden earthquake failure is referred to as the elastic-rebound theory. It is estimated that only 10 percent or less of an earthquakes total energy is radiated as seismic energy. Most of the earthquakes energy is used to power the earthquake fracture growth or is converted into heat generated by friction. Therefore, earthquakes lower the Earths available elastic potential energy and raise its temperature, though these changes are negligible compared to the conductive and convective flow of heat out from the Earths deep interior.