My guess would be that what you're smelling is musk. Many snakes when threatened or in a stressful situation will secrete a foul smelling yellowish/cream colored substance from their vent known as musk. You said the previous owner didn't handle this snake much and with the move today I think this is probably most likely the source of the smell.
With proper husbandry, some handling, and some time this shouldn't be an issue.