What is meant by the term 'olfactory fatigue'?

• A. Increased sensitivity to odors
• B. Loss of ability to detect odors after continuous exposure
• C. Recovery of the sense of smell after exposure
• D. Improvement in the sense of smell

Answer: (B)

The term 'olfactory fatigue' refers specifically to the loss of the ability to detect odors after a period of continuous exposure to those odors. This phenomenon occurs because the olfactory receptors in the nose become less sensitive over time when exposed to a consistent smell, making it difficult for a person to perceive that odor as strongly as they initially did.

Understanding olfactory fatigue is crucial in hazardous materials situations, as individuals may not notice a dangerous chemical's presence after prolonged exposure, which could lead to a dangerous situation if they are unaware of the risk. Recognizing this concept helps responders maintain awareness of their environment and take necessary safety precautions, ensuring they are alert to any potential hazards.