Of all human senses, the sense of smell is considered to be the most sensitive, and this sense is the first to convey odors to the brain and have external effects. A strong sharp, unpleasant, bad smell very quickly sends information to the brain as a signal of danger, discomfort and quick action. The organism that receives such information also goes into a state of readiness, and the person involuntarily escapes and moves away. On the other hand, a clean, pleasant, fragrant and pleasant smell refreshes a person, makes him feel safe and calm, and makes the body healthy, while a bad and unpleasant smell can poison the body and cause death. In a place with unpleasant smell, a person cannot sleep, even if he sleeps, his body cannot settle down and rest completely. Any smell, like music, affects the etheric body of a person who bypasses the mind and transmits various information that changes our mood and emotions before we understand. Let's introduce the effects of some plant aromas and aromatic oils that have a positive effect on the human body.