Abstract
This study explored the effects of subtle scents of 1,8-cineole and (-)-bornyl acetate on mood, cognition, and behavior in healthy individuals and elderly residents of nursing homes. Three experiments were conducted involving short- and long-term exposure to these scents to assess mood, memory, and task completion. Results from experiments with healthy individuals indicate that (-)-bornyl acetate improves mood, particularly for those who like the scent, whereas 1, 8-cineole improves mood, regardless of scent likability. Prolonged exposure to both scents, even at low concentrations, yielded different effects compared to no scent, such as sustained concentration of 1,8-cineole and drowsiness with (-)-bornyl acetate. In experiments with older adults, although the participants did not perceive scents, improvements in cognition, behavior, and sleep were observed. However, challenges have arisen, such as the caregiver's hypersensitivity reaction to 1,8-cineole, highlighting the need for careful consideration when implementing aromatherapy in nursing facilities. This study underscores the potential benefits of aromatherapy in improving the quality of life of the elderly. Furthermore, it emphasizes the importance of controlling scent distribution and considering individual sensitivities.