What must you do if you encounter strong odors and gases?

• A. Ventilation cannot be relied upon to remove all flammable vapors emanating from the presence of liquid fuel.
• B. Increase ventilation to maximum and ignore smell.
• C. Ventilation will remove all vapors instantly.
• D. Ventilation is unnecessary.

Answer: (A)

When you smell strong odors or gases, you can’t count on ventilation alone to make the area safe. Flammable vapors can accumulate in confined spaces and may linger or drift to other areas, and ventilation may not remove them completely or quickly enough to prevent ignition. The safe approach is to treat it as a potential hazard: move away from the source if you can, shut off fuel or other ignition sources only if it’s safe to do so, avoid creating sparks, and alert others or call for help. Relying on ventilation to clear all vapors quickly is dangerous, and actions that ignore the smell or claim vapors disappear instantly aren’t reliable.