non-combustion type flavor aspirator enters from one side and exits from the other end a flavor-generating material for imparting flavor to the air flow, a mouth portion of a user sucking disposed on the other end side, and a heat source that generates heat to raise the temperature of the flavor-generating material by oxidation reaction, the flavor-generating material, and a casing for holding the mouthpiece portion and the heat source, the casing includes a reversibly changeable air adjustment mechanism of the contact area with the air to be subjected to oxidation reaction with the heat source.
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