PROBLEM TO BE SOLVED: To provide an aroma set with which a temporal difference is given to a volatilization amount of a fragrance component of an aroma liquid by adjusting a flow rate of the aroma liquid reaching an exothermic agent that is a chemical heat source, even while using the chemical heat source as a heat generation method, scent can be speedily diffused into air by fast-acting transpiration of the fragrance component of the aroma liquid just after addition of the aroma liquid and a user can enjoy the diffusion of the scene without caring of the time by the continuous transpiration of the fragrance component and which can be produced at low cost.SOLUTION: An exothermic agent 31 which reacts with water to generate heat is accommodated in a lowest layer of a bottomed cylindrical pot 10 and further, a porous body 40 which can be pregnant with an aroma liquid 51 is laminated in an upper layer of the lowest layer. In order to laminate an aroma liquid case 50 for injecting the aroma liquid 51 into the porous body 40 on an upper surface of the porous body 40, the case 50 is accommodated in the pot 10 or separately prepared outside of the pot 10.SELECTED DRAWING: Figure 2
