How does hydrogen sulfide affect the sense of smell over time?

Hydrogen sulfide is recognized for its distinctive rotten egg odor, which can be quite potent even at low concentrations. However, repeated or prolonged exposure to this gas can lead to a phenomenon known as olfactory fatigue or adaptation. This occurs when the sensory receptors in the nose become less responsive to a persistent stimulus. As exposure continues, the ability to detect the smell diminishes, resulting in a dulled sense of smell.

This decrease in sensitivity can be particularly concerning in environments where hydrogen sulfide is present, as individuals may become unaware of the gas’s presence, which poses serious health risks. Thus, the correct relationship between hydrogen sulfide and the sense of smell is one where continued exposure ultimately dulls the olfactory response.