PROBLEM TO BE SOLVED: To provide an odor modulation agent and an odor modulation method capable of readily solving problems caused by bad odors by modulating odors released in living environments or by industries in daily life to an odor different from the bad odor.SOLUTION: An odor modulation agent characterized by containing at least one kind of oxygen-containing ring compound selected from a furan compound, a pyran compound and a cyclopentanone derivative.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT