Students had claimed that the ‘foul-smelling substance’ was an IDF-made chemical weapon.

Students were lying in the grass at Columbia University on the first day of classes Tuesday, posing for photos with the furry lion mascot in the center of campus and lining up for free cups of lemon and raspberry sorbet.

Columbia University, the epicenter of a last spring's campus movement against Israel's war in Gaza, is bracing for the return of protests this semester