UPDATE: Things are getting back to normal at Benowa State High School, after an earlier gas leak.
Someone dialled triple zero at 10:13am to report a strange smell.
Two fire trucks arrived at the school on Mediterranean Drive on Tuesday.
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Crews asked students to leave their classrooms and head to the school oval as a precaution.
It is believed the smell of gas was isolated to the Science Block.
HAZMAT has been called.
Students should be allowed to return to their classrooms shortly.