While working in a mechanical room, a plumber notices a strong, pungent chemical odour emanating from a poorly labelled drum. The odour causes slight irritation to their eyes and throat. There is a ventilation fan in the room, but it is not operational. What is the immediate and most appropriate action the plumber should take?

Question: While working in a mechanical room, a plumber notices a strong, pungent chemical odour emanating from a poorly labelled drum. The odour causes slight irritation to their eyes and throat. There is a ventilation fan in the room, but it is not operational. What is the immediate and most appropriate action the plumber should take?

Answer options: ✅ Evacuate the area immediately, report the hazard, and ensure the area is secured.

• Attempt to open a nearby window to improve ventilation and continue working.
• Consult the Safety Data Sheet (SDS) for the drum's contents before taking further action.
• Put on a particulate respirator and try to identify the source of the leak.

Correct answer: Evacuate the area immediately, report the hazard, and ensure the area is secured.

Explanation: Experiencing eye and throat irritation from an unknown chemical odour indicates an immediate health hazard. The safest and most appropriate action is to evacuate the area immediately to protect oneself and others, then report the hazard. Attempting to ventilate, consult an SDS while exposed, or address the leak with inadequate PPE could worsen the situation.