Keshan Black Fungus, scientifically known as Aspergillus niger, is a type of mold commonly found in soil and decaying organic matter. It can also grow on various food products, particularly in humid conditions. While it is generally harmless, it can produce mycotoxins that may pose health risks if ingested in large quantities. In some cases, Keshan Black Fungus has been associated with respiratory issues, especially in individuals with weakened immune systems. It is important to maintain proper hygiene and food storage practices to minimize exposure to this fungus and its potential effects on health.