"I couldn't believe they let us back into the building," DiIuglio said.
He characterized the smell as "ammonia-like."
Other witnesses, students in DiIuglio's class, reported the smell was "sweet" but "not quite fire."
An additional CFD engine responded the second time along with University technicians.
"Three HUPD officers, the custodian and one student complained of being irritated by the smell," Wrinn said.
The officers and the custodian were taken to UHS complaining of eye and respiratory problems.
The University brought in both the Triumvirate Environmental Company to clean up the site and the Covino Company to conduct substance tests.
"They are taking carpet samples, doing air tests and obviously they'll test a sample of the substance too," Wrinn said.
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