<unk>  is inflammation of the lung caused by irritation from aspirated vomitus or barium used in gastro-intestinal imaging, ingested gasoline or other petroleum distillates, ingested or skin absorbed pesticides, gases from electroplating, or other irritants. It is sometimes called a<unk> <unk> ", though it is not infectious. May also be caused by the use of inhalants.When the toxic substance is an oil, the<unk>  may be called lipoid<unk> .
Chemical pneumonitis
Viral pneumonia
Atypical pneumonia
Acute bronchitis
Bacterial pneumonia
Hypersensitivity pneumonitis
CMV pneumonitis
Cavitary pneumonia