What physical sensation indicates that a Type B fire may still be a risk?

The sensation of heat felt when approaching a Type B fire is a critical indicator that the risk of fire still exists. Type B fires involve flammable liquids, gases, and oils. Even after a fire appears to be extinguished, residual heat can indicate that there may still be active burning processes occurring, potentially reigniting the fire. It’s essential to be aware of this heat because it signals that the situation is not yet fully under control and that there's a danger of fire resurgence. This understanding aids in ensuring safety and prevents the risk of further accidents or injuries.

In contrast, the other sensations listed do not accurately indicate the ongoing risk of fire. A pleasant coolness around, for example, may suggest a safer environment, while lingering smoke often relates to incomplete combustion rather than immediate fire risk. The absence of any odor might also imply that there are no active flammable vapors present, which could indicate a lower risk situation. Recognizing the heat sensation, therefore, plays a vital role in assessing fire safety and the need for continuous caution.