Question

bacteria that cause food - borne illness:
are tasteless
smell rotten
discolour food
taste bitter

Explanation:

Food - borne illness - causing bacteria often do not have a distinct taste. Rotten - smelling, discoloured, or bitter - tasting food may indicate spoilage (not necessarily from bacteria that cause food - borne illness). Bacteria that cause food - borne illness can be present in food without any obvious sensory changes like taste, smell, or color.

Answer:

are tasteless