Reducing the Negative Effects of Surgical Conditions Use of Double Layer Mask Against Electrocautery With Smoke Filter

Inclusion Criteria: * people over the age of 18. * People who agreed to participate in the study, * who have been working in the operating theatre for at least one year. * people who do not have chronic diseases Voluntary personnel who volunteered to co-operate were included in the study. Exclusion Criteria: * People who did not agree to participate in the study, * persons who have been working in the operating theatre for less than one year * people with chronic diseases, * people who withdrew from the study before all data were collected * Personnel whose laboratory results could not be analysed were excluded from the study.