On Tuesday morning, an incident occurred at the Eindhoven University of Technology's Helix building where two hazardous substances unexpectedly came into contact, releasing a dangerous vapor. One individual inhaled this substance and was subsequently transported to the hospital for observation. A small section of the university building was temporarily evacuated, but the situation was quickly brought under control by emergency services, allowing students and staff to return shortly thereafter. The exact location within the building where the accident occurred, whether a classroom or research space, remains undetermined.