Mold CAN cause bronchitis.
More Info: Mold exposure and inhalation is associated with a significant increase in bronchitis as well as respiratory infections. When inhaled, mold spores attach themselves to the respiratory tract and cause several respiratory health issues including bronchitis, asthma, sinus congestion, and allergic reactions. 
Indoor Mold Inhalation
Mold can grow anywhere that excess moisture is present. Indoor mold growth is common especially in damp areas such as basements. Once mold is present, it will reproduce through tiny airborne spores seeking moist surfaces to begin new colonies. In residential settings, these airborne spores are the source of health issues. 
Outdoor Mold Inhalation
Mold is not exclusively problematic indoors or in confined spaces. Mold can be inhaled outdoors as well. The issue of mold inhalation is especially problematic for landscaping professionals who are exposed to organic substances such as peat and vermiculite where mold grows naturally. When handled, these substances produce airborne dust particles to which the mold spores attach themselves. These are then inhaled by the handler, which can cause a variety of respiratory problems including bronchitis. 
 Fisk, W., Eliseeva, E., & Mendell M. (2010). “Association of residential dampness and mold with respiratory tract infections and bronchitis: a meta-analysis.” Environmental Health 9(72).
 “CDC – Indoor Environmental Quality: Dampness and Mold in Buildings – NIOSH Workplace Safety and Health Topic.” Centers for Disease Control and Prevention. N.p., n.d. Web. 29 Feb. 2012. <http://www.cdc.gov/niosh/topics/indoorenv/mold.html>
 “Prevent Respiratory Illnesses Caused by Dust and Mold.” Tailgate Safety Training for Landscaping and Horticultural Services. Version AEX 192.1.11. The Ohio State University Extension, n.d. Web. 29 Feb. 2012. <ohioline.osu.edu/aex-fact/192/pdf/0192_1_11.pdf>.