http://articles.mercola.com/sites/articles/archive/2005/11/01/your-pillow-is-likely-infected-with-fungus-an-you-dont-even-know-it.aspxAccording to researchers your pillows may be home for millions of fungal spores, . Aspergillus The fungus Aspergillus fumigatus, which is the species most commonly found in pillows, is also the most likely to cause disease. The resulting syndrome, aspergillosisenCommunityServer 2008.5 SP1 (Build: 31106.3070)