More than a dozen people were overcome by fumes late Friday morning at a medical school in Cobb County, authorities said.

The incident happened about 10:30 a.m. at the Everest Institute in the 1600 block of  Terrell Mill Road near I-75.

Cobb County fire spokeswoman Denell Boyd said the fumes came from a broken vial of surgical bonding material that was disposed of into a trash can.

“At this point, we have decontaminated four patients,” Boyd said.

A total of 13 people were being treated for symptoms such as nausea, difficulty breathing and dizziness, Boyd said. Everyone was being treated at the scene, and no one had been transported to the hospital, she said shortly after noon.