Loss of Smell in Lung Cancer Patients Undergoing Chemotherapy: Prevalence and Relationship with Food Habit Changes

•Half of the patients’ group exhibited hyposmia before the begining of chemotherapy.•Patients had lower odor detection and identification abilities compared to controls.•Food odors were perceived as less edible by patients compared to controls.•Patients with hyposmia declared using more condiments than patients without hyposmia.