What does hydrogen sulfide smell like?

Hydrogen sulfide has a distinct and well-recognized odor that is commonly described as smelling like rotten eggs. This characteristic smell is attributed to the presence of sulfur in hydrogen sulfide, which is a gas that can be found in various environments, especially those containing decomposing organic matter or in certain industrial processes. The odor is so notable that it serves as a warning sign for safety, as high concentrations of hydrogen sulfide can be hazardous to health.

The other options do not accurately represent the smell of hydrogen sulfide and pertain to different substances. Burnt rubber has a sharp, acrid smell, roses have a sweet and pleasant floral scent, and gasoline has a fuel-like odor. None of these options capture the specific, sulfurous scent associated with hydrogen sulfide, making the description of rotten eggs the definitive and correct choice.