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The components of cypress also have the effect of preventing mites and termites. It has been confirmed by experiments that mites will die in cypress wood chips, and some of the anti-mite sheets placed under the carpet use cypress essential oil. Experiments have been conducted to eliminate the smell of ammonia with hinoki cypress essential oil, and its effect has been demonstrated. The deodorant rate of cypress essential oil is 97%, which is a surprising figure. The Wood Research Society has reported that the scent of cypress has a relaxing effect. It was demonstrated that inhalation of the scent component α-pinene contained in cypress causes the parasympathetic nervous system to dominate and bring about physiological relaxation. We have also researched and presented the relationship between cypress natural dried chips and the human brain. We prepared an artificial dried chip made by heat-treating cypress wood at 120 ° C and a natural dried chip with a strong scent. We investigated the activity of the prefrontal cortex in the brain when we smelled each by near-infrared spectroscopy. As a result, it was found that the activity of the prefrontal cortex subsided and relaxed when the natural dried chips were smelled.