What is the purpose of real-time monitoring when dealing with chemicals that have strong odor?

• A. It is not helpful.
• B. It helps track exposure levels in real time and prompt controls.
• C. It replaces laboratory analysis.
• D. It prolongs sampling.

Answer: (B)

Real-time monitoring is used to get immediate feedback on how much of a strong-odor chemical is present in the air, so protective actions can happen right away. Odor alone isn’t a reliable indicator of danger because people smell differently, odors can fade, and some hazardous chemicals have little or no odor. Real-time measurements provide objective concentration data and can trigger alarms or automatic controls (like increasing ventilation or pausing work) to keep exposures under safe levels. This quick information helps maintain safety while still allowing for informed decisions and appropriate PPE or work-practice adjustments. It does not replace laboratory analysis, which provides confirmatory, detailed information about identity and precise concentration; real-time monitoring is there to offer rapid protection and continuous awareness rather than a complete substitute for lab testing.