Assertion: hydrogen sulfide's egg odor | /r/HasProperty | characteristic rotten-
Facets:
Source sentences:
text: Hydrogen sulfide has a characteristic rotten-egg odor; however, olfactory fatigue may occur and consequently it may not provide adequate warning of hazardous concentrations.
text: It has a characteristic rotten-egg odor that is detectable at concentrations as low as 0.5 ppb.