Final answer:
In the list provided, unsoiled dressings are the exception and do not constitute infectious waste since they are not contaminated.
Step-by-step explanation:
Among the options provided, infectious waste includes human blood products, contaminated gloves, and used needles.
However, unsoiled dressings do not qualify as infectious waste since they have not been contaminated with potentially infectious material. Infectious waste often contains pathogens that could introduce infection if mishandled. Hence, the exception in the list is unsoiled dressings, as they do not pose a biological risk.