Wallemia sebi

This fungus is a very common indoor fungus and is commonly found airborne. It is xerophilic and osmophilic and can be found growing on substrates that would desiccate many other fungi. These substrates include rock salt, bacon, salted foods, jam, jellies, fruits, textiles, rotting paper, and mammals. W. sebi can also be found in floor dust, mattress dust, soil and hay. This species is allergenic and is known to colonize human lungs, bones and skin. However, W. sebi is not considered a serious pathogen.