In this study, aromatherapy inhalation will be applied to psychiatric nurses in the experimental group. Aromatherapy inhalation using 2% diluted lavender essential oil will be applied to 33 psychiatric nurses in the experimental group, 30 minutes before starting work, every other day during a week. The "General Job Stress Scale (GJSS)" and "Therapeutic Relationship Evaluation Scale-Nurse Form (TRES-NF)" inventories will be filled out by 33 psychiatric nurses in the experimental group before and after aromatherapy inhalation, and by 33 psychiatric nurses in the control group simultaneously with the psychiatric nurses in the experimental group.

There will be no training or intervention. No intervention will be made to the 33 psychiatric nurses in the control group. The psychiatric nurses in the control group will be asked to fill out the "General Job Stress Scale (GJSS)" and "Therapeutic Relationship Evaluation Scale-Nurse Form (TRES-NF)" inventories simultaneously with the 33 psychiatric nurses in the experimental group.

Aromatherapy inhalation using 2% diluted lavender essential oil will be applied to 33 psychiatric nurses in the experimental group, 30 minutes before starting work, every other day during a week. The lavender essential oil to be used in the study will be dropped 3 drops onto a cotton handkerchief cut into a disc shape and fixed to the clothes of the psychiatric nurses, 20 cm away from their noses, and they will be asked to inhale it for 30 minutes.

The Turkish validity and reliability of the scale developed by De Bruin (2006) to measure the general job stress of employees was provided by Teleş (2020). The scale has a one-dimensional structure that addresses the emotional, cognitive, motivational and social consequences of job stress. The scale, which has no sub-dimensions and consists of a five-point Likert-type and nine items, is stated as "1=Never, 2=Rarely, 3=Sometimes, 4=Mostly, 5=Always". The total score to be obtained from the scale is a concrete expression of job stress and a high score to be obtained from the scale indicates that high job stress is experienced. As a result of the validity and reliability study conducted by Teleş (2020), the Cronbach alpha coefficient of the scale was stated as 0.91 (De Bruin, 2006; Teleş, 2020).

Developed by Coelho et al. (2021) to assess the quality of the therapeutic relationship between psychiatric nurses and psychiatric patients, the Turkish validity and reliability of the scale was established by Duran and Polat (2023). The scale, which consists of a five-point Likert type and 25 items, can be used in one dimension or with four subdimensions as "empathy, self-awareness, participation in care, and orientation". The answers to each item in the scale are specified as "1=Never, 2=Rarely, 3=Sometimes, 4=Frequently, 5=Always". It has been stated that a minimum of 25 and a maximum of 125 points can be obtained if the scale is used in one dimension. It has been stated that if the scale is used in other subdimensions, 5-25 points can be obtained from the empathy subdimension, 6-30 from the self-awareness subdimension, 8-40 from the participation in care subdimension, and 6-30 from the orientation subdimension. As a result of their validity and reliability study, Duran and Polat (