Front and Back-of-House team members have the same responsibilities to maintain high standards of food safety. Though they serve different roles from restaurant type to restaurant type, food safety practices are standard regardless of the brand or operation.
Cross contamination can be a major cause of food borne illness. People often think smell is an indication of whether food is safe to eat. There are different types of bacteria, some of which cause illness in people and other that don't. The types of bacteria that cause food borne illness do not affect the taste, smell, or appearance of food.