Health Evaluation Report 87-109-1950; North Riverside Fire Department North Riverside, Illinois [open pdf - 1MB]
"In January 1987 the National Institute for Occupational Safety and Health (NIOSH) received a request from the International Association of Fire Fighters (IAFF) to evaluate the toxicity of smoke clouds produced by a zinc chloride (ZnCl2) smoke generating device (5S smoke bomb) used for smoke training drills at the North Riverside Fire Department, North Riverside, Illinois. During the second of two exercises in October, 1986, fire fighters reportedly experiences adverse health effects including fever, chills and soreness of joints."
HETA # 87-109-1950; Health Evaluation Report Number 87-109-1950
Centers for Disease Control and Prevention: https://www.cdc.gov/