In two separate experiments, researchers found that women exposed to androstadienone felt more focused and their mood improvement was consistent. This research supports the idea that androstadienone can positively influence women's mood.

This study found that androstadienone can change brain activity without people being aware that they are smelling it. It affects both the deeper parts of the brain and areas linked with thinking and emotions, suggesting it plays a role in managing feelings and attention.

When exposed to androstadienone, women showed immediate increased signs of physiological arousal and a more positive mood. These effects were significant only when a male experimenter was present.

Research suggests that androstadienone can improve mood and focus in women, with an increased sensitivity to emotional information. The effects on mood and sexual arousal are often heightened in the presence of a male.

When female student volunteers were exposed to androstenol they had significantly more social interactions with men compared to when they were not exposed. The increase was observed across various aspects of communication, including the number, depth, and duration of conversations.

Researchers had women smell Androstenol, some common everyday odors, and just plain air while checking blood flow in their brains using PET scans. Androstenol lit up a part of the brain called the hypothalamus, which in animals is all about controlling behaviors related to finding a mate. But when the women smelled normal odors, only the brain areas that deal with smelling things (like the smell cortex and amygdala) were active.

For women in the study, sniffing androstenol resulted in higher ratings of attractiveness for photographs of the opposite sex. Additionally, women reported feeling "sexier" when they inhaled androstenol.

In this study, when men smelled androstenol, they got better at a word game. They made fewer mistakes than when they didn't smell it. It shows that androstenol could help men pay more attention to specific tasks when in challenging or stressful situations.

This study found that when females were exposed to androstenol, rather than a control, they tended to rate their moods as submissive rather than aggressive (around the middle of their menstrual cycle).

In this study, when women were exposed to androstenol, they were more likely to give positive assessments of men (compared with a control group).

Using a method called "Mood Mapping," researchers showed vanilla's position on the relaxation end of the arousal scale. Further physiological tests suggested that vanilla could effectively reduce stress-induced muscle tension.

In a study with 57 patients undergoing MRI, those who inhaled a vanilla-like scent reported 63% less anxiety if they enjoyed the fragrance, compared to patients who only received humidified air.

This study investigated how lemon essential oil affects test anxiety among first-year nursing students. It was found that after the students in the intervention group inhaled lemon essential oil for 15 minutes, their anxiety levels significantly decreased by 43.3%.

This study found that lemon oil significantly enhanced positive mood compared to water and lavender, with effects seen in both self-report measures and objective mood assessments.

In a study with 100 first-time moms during labor, it was found that smelling geranium essential oil helped them feel less anxious and also lowered their diastolic blood pressure.

This Swedish study spanned five years and involved 59 participants who underwent nature-based rehabilitation treatment in a garden. Participants reported that smelling geraniums had a calming effect, fostering a sense of well-being and inner peace.

In this study, researchers looked at how the smell of essential oil from Japanese cedar wood could help women feel better after doing boring work. They found that smelling the cedar wood oil could make mood better and might even calm down the body's stress response.