Alterations in emotional responses (pleasantness/unpleasantness) induced by sniffing food odors during chemotherapy in patients with lung cancer.

Background: Patients receiving chemotherapy experience anorexia and food aversion in their daily lives, and one of the causes is the smell of food. However, it is not clear why the aversion to these smells occurs. This study aimed to determine the emotional responses of patients when they sniff representative food odors during chemotherapy and to investigate factors influencing smell-induced food aversion.