Nearly 30 children and one adult became ill last week when a plume of tear gas and pepper spray used at a police training exercise in the area drifted to a nearby elementary school in San Bruno, Calif., according to authorities.
At the time of the incident, nearly 30 students at Portola Elementary School reported experiencing symptoms including coughing, watery eyes, wheezing and trouble breathing, according to Matthew Duffy, superintendent of the San Bruno Park School District. There were also news reports of vomiting and rashes.