One woman is dead and nine others were sickened by a poisonous chemical used in an apparent suicide that forced authorities to evacuate three floors of a San Jose hotel, according to reports.

“More than 100” emergency workers responded to the incident at the Fairmont Hotel at 10 a.m. Saturday after a hotel worker found the woman dead in what authorities are calling an apparent suicide, the San Jose Mercury News reported.

The chemical police believe was used in the suicide soon spread and sickened others.

Seven employees and two guests were treated at the scene or taken to local hospitals to be “decontaminated,” but none of the injuries were considered life-threatening, San Jose Fire Dept. Capt. Mitch Matlow told reporters.

The woman was found by a hotel employee in a 19th-floor room, who alerted police. The staffers and guests soon started reporting feeling faint and lightheaded, suffering from shortness of breath.

Police, who were still investigating the apparent suicide and the type of chemical deployed, cleared out the the 18th, 19th and 20th floors and shut down neighboring streets, which remained closed to traffic until 5 p.m. Saturday.

The 19th floor remained closed Saturday night, but guests were allowed to return to the other two floors.

“It stinks now but it’s not toxic,” Matlow said. “The hazard was contained to that room.”

Preliminary investigation by police determined that the dead woman was not a registered guest, and it was unclear if she knew the person who had rented the room.