The present invention identifies substances which suppress odors of sulfide compounds. Provided is a method for evaluating and/or selecting an agent for suppressing odors of sulfide compounds, the method comprising: adding a test substance and a sulfide compound to at least one olfactory receptor polypeptide selected from the group consisting of OR4S2 and polypeptides having an amino acid sequence identity of at least 80% to OR4S2; and measuring the response of the olfactory receptor polypeptide to the sulfide compound.