Well, while durian is sold almost in any supermarket, you are not allowed to take it into hotels.
I know because I once left durian in a supermarket bag at my friends door in a hotel in singapore (i had to catch a cab to the airport) the hotel was almost evacuated, as the smell went into the aircondition and than transmitted to the whole Hotel ;)

But I just read mibenkito hkg post, and the combination of pudding and durian might not smell as bad as a fresh durian fruit. I think I had something similar in the past somewhere, and the smell was ok (it was not so bad at all)