What is an advantage of using fire gas detectors?

Using fire gas detectors offers the significant advantage of being able to determine whether a fire contains toxic gases. These detectors are specifically designed to analyze the composition of the gases emitted during a fire, which can include harmful substances. Identifying the presence of toxic gases is critical for ensuring the safety of occupants and for guiding emergency responders appropriately. By providing this information, fire gas detectors make it possible to assess the hazards more accurately and respond in a way that mitigates risk to human life and property.

The other options, while they might highlight certain features or comparisons, do not capture the primary benefit that fire gas detectors provide in terms of safety and risk management. They lack the specific capability to address toxic emissions from a fire directly, which is a critical factor in emergency scenarios.