Hundreds of students were evacuated from Germantown High School and officials can't pinpoint the mystery odor that drove everybody out. Whatever created the smell also made five cafeteria workers sick. They were sent to the hospital and investigators shut down part of the campus as a precaution.

Around 12-30, sirens blared from fire trucks at Germantown High as hundreds of students evacuated building 'A'. Chris Hanford, a sophomore, was among them. "We heard something about chemicals and that's all we knew," he says.

Officials say the five cafeteria workers went to the hospital complaining of itchy skin, trouble breathing and tight chests. Hazmat crews went in with special equipment, but found nothing. Whatever caused the noxious odor must have disappeared before they got there, surmised officials. The mystery odor sparked rumors of a stink bomb or pepper spray.

Meredith Lesley was in class when it happened and says she suspects something foul. "It just happened to happen in our 'D' lunch, our very last lunch before we go to 6th period. So, it's not like it missed all the other lunches."

Even students think something's fishy and it's more than coincidence. They're thinking it was a prank probably pulled by someone hoping to get home a little early for spring break.

"[A] good way to start a spring break -- a little prank at school," says senior Kristin Hanford.

The cafeteria workers were released from the hospital and are in good condition. No students were injured and officials say while there's no indication this was a prank, they will investigate.