And from the Parrish Fire District's Facebook page:
Early this evening our District along with MCEMS responded to a reported hazardous materials incident on board a Manatee County School Bus. Crews arrived on scene to find fifteen students with mild respiratory irritation. All students were triaged and prioritized according to their initial complaint. It was a unified command decision to call out secondary bus to be dispatched to pick up the stranded students and remotely transport to the local High School for a limited access lot to provide security and accountability for parents to pick up students. Manatee Co. School Board reps along with the Sheriffs Office set up a coordinated pick up area.
At this time, the incident is being ruled a prank, as a deodorant / aerosol body spray was discharged on the bus. This is still a active on-going Investigaion in which bus cameras will be reviewed and further interviews conducted.
All 30 students on the bus were accounted for and treated and released with refusals to be be transported by EMS.
(Thanks to Florida bureau chief Charles Pescovitz!)