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.
Beryllium
Beryllium is classified as an IARC Group 1 carcinogen and can also cause interstitial lung disease. Manufacturing workers, dental technicians, machinists, jewelers, plumbers, electricians, precious metal reclamation workers, and welders are at risk for beryllium exposure. Cadmium
Cadmium is classified as an IARC Group 1 carcinogen and it is a cause of several cancers, including lung cancer. Workers can be exposed to cadmium through welding, zinc smelting, copper smelting, lead smelting, electroplating, battery manufacture, plastics manufacture, and in alloying. Chromium
Chromium is classified as an IARC Group 1 carcinogen and is linked to lung cancer. Workers can be exposed to chromium via welding, steel manufacturing, pigment/dye manufacturing, and electroplating. Coal dust
Exposure to coal dust is the cause of coalworkers pneumoconiosis, also called "black lung disease", is an interstitial lung disease caused by long-term exposure (over 10 years) to coal dust. Symptoms include shortness of breath and lowered pulmonary function. It can be fatal when advanced. Between 1970 and 1974, prevalence of CWP among US coal miners who had worked over 25 years was 32%; the same group saw a prevalence of 9% in 2005–2006. It can also exacerbate or cause COPD. Diesel exhaust
Diesel exhaust contains a variety of gaseous and particulate chemicals, including soot, polycyclic aromatic hydrocarbons, and other known carcinogens. Flock
Flocking is the technique of adding small pieces of nylon or other material to a backing, usually a textile, to create a contrasting texture. Inhalation of flock can cause flock workers lung.