Ah, it sounds like you have an American wisteria, likely the 'Amethyst Falls' variety, which unfortunately has a disagreeable odor like that of cat urine - normal for this wisteria. There is little you can do about this since it's normal, though pruning out the flowers or masking the scent with other 'nice-smelling' plantings may help alleviate the problem. Wish I could be more helpful.
Answered on June 22, 2015
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