Campus Alert Archive
Notre Dame

Suspicious Odor in Notre Dame Chemistry Lab Sends Four to Wellness Center as Hazmat Teams Respond

INchemical spillemergency notificationmedium confidence
Confirmed Threat

On December 9, 2025, a chemical leak on the second floor of Stepan Chemistry Hall at the University of Notre Dame prompted a hazmat response from multiple agencies. A 'suspicious odor' was reported at approximately 3:30 PM EST, and four people were evaluated at the Notre Dame Wellness Center. Notre Dame Police, Fire Department, Risk Management, and the South Bend Fire Department all responded.

Alerts
2
Response
—
Killed
—
Injured
—
Institution
University of Notre Dame
Private R1 · IN
~13,000 studentsNDAlert
Confirmed Timeline

Alert Sequence

2 messages in sequence

Some alert texts below are approximate reconstructions from news coverage, not confirmed verbatim transcripts. Reconstructed texts are shown in italic with a dashed border. Verified verbatim texts have a solid border and are marked accordingly.

INITIAL ALERTmulti-channel
Approximate reconstruction225 chars
NOTRE DAME ALERT: A chemical leak has been reported in Stepan Chemistry Hall. Avoid the building. Hazmat teams are responding. If you were in the building and feel unwell, report to the Notre Dame Wellness Center immediately.

This text has been reconstructed from news coverage and may not reflect the exact original wording.

The incident was reported at approximately 3:30 PM EST on December 9, 2025, when a lab on the second floor alerted emergency responders to a 'suspicious odor'
Notre Dame deployed NDPD, Fire Department, and Risk Management, with the South Bend Fire Department also called to assist
Four people were transported to the Wellness Center for evaluation
ALL CLEARmulti-channel
Approximate reconstruction223 chars
NOTRE DAME ALERT UPDATE: The chemical leak in Stepan Chemistry Hall has been contained. Hazmat teams have cleared the building. Normal operations may resume. If you experience any symptoms, please visit the Wellness Center.

This text has been reconstructed from news coverage and may not reflect the exact original wording.

The all-clear was issued after hazmat teams identified and contained the chemical source and ventilated the building
A similar chemical spill incident occurred at Fitzpatrick Hall of Engineering in December 2024, suggesting recurring hazmat risks in research buildings
Context

Background

On December 9, 2025, a chemical leak on the second floor of Stepan Chemistry Hall at the University of Notre Dame triggered a hazmat response from campus and local emergency services. A 'suspicious odor' was detected at approximately 3:30 PM EST, and the university deployed Notre Dame Police, Fire Department, and Risk Management teams, with the South Bend Fire Department called in to assist. Four people were taken to the Notre Dame Wellness Center for evaluation. The Observer, Notre Dame's student newspaper, reported on the multi-agency response. Notably, a similar chemical spill incident had occurred at Fitzpatrick Hall of Engineering in December 2024, suggesting recurring hazmat risks in the university's research buildings.
Analysis

Key Findings

Four people required medical evaluation at the Wellness Center, indicating exposure to potentially harmful chemicals
Multiple agencies responded including NDPD, campus Fire Department, Risk Management, and South Bend Fire Department
A similar incident occurred at another Notre Dame engineering building in December 2024, suggesting a pattern of hazmat incidents in research facilities
Outcome
Four individuals were evaluated at the Notre Dame Wellness Center. The chemical source was identified and contained. The building was ventilated and eventually cleared for reentry.
Provenance

Sources

  1. Student Paper
    Chemical leak in Stepan Chemistry Hall elicits hazmat response (The Observer)
    ndsmcobserver.com
Tags
chemical-spillhazmatchemistry-labindianaprivate-universitywellness-centermulti-agency-response
Added April 2026Updated May 2026Via ingestion