I think this is the worst advice ever! First off, why tell the husband?? He's not her keeper!
Second, there might not be anything wrong with her smell...you just might not likely strong female scents.
Don't tell her. I think if there is an actual problem it will become obvious to them before too long. Likely though, I just think this is a case of a woman having a strong scent and your wife not being partial to it.