I found a Vietnamese restaurant that serves durian smoothies. It tastes kinda like a strong onion smoothie. I haven't had the real fruit yet.
Travel and food writer Richard Sterling says:
“ ... its odor is best described as pig-shit, turpentine and onions, garnished with a gym sock. It can be smelled from yards away. Despite its great local popularity, the raw fruit is forbidden from some establishments such as hotels, subways and airports, including public transportation in Southeast Asia."
Other comparisons have been made with the civet, sewage, stale vomit, skunk spray and used surgical swabs.