2021 年 5 巻 1 号 p. 1_27-1_36
Smell has unique relationships with emotions and memories. However, compared with its audiovisual counterparts, the personal olfactory display device is still not prevalent. If it can be fully used and become prevalent, it may reduce its environmental impact and contribute to a less stressful society. Based on this, the study chose to examine and compare four different representative olfactory display devices to investigate how to make such devices more habit-forming. As revealed, the potential of scents to bring the variable rewards should be fulfilled by avoiding the scents' inappropriate expressions and guarantee the perceived utility. Concretely, if the smell serves to augment particular contents, the rules of the correspondence between scent and content should be determined, and the pre-set scents should be configured in advance. If the smell leads the product experience, it should provide multiple optional scents, be portable, and keep the scent experience personal.