By – A.Gayathri – Tutor in the Department of Respiratory, Saveetha College of Allied Health Sciences, SIMATS, Chennai. Passive smoking, also known as secondhand smoke, occurs when a person involuntarily
By – A.Gayathri – Tutor in the Department of Respiratory, Saveetha College of Allied Health Sciences, SIMATS, Chennai. Passive smoking, also known as secondhand smoke, occurs when a person involuntarily