Shouldn't this be a mans question?
Because if their husband smells of another woman's perfume, it means he has been close to someone else. I work for a French company and the they seem to be wearing perfume and are a very huggie group of people, they hug like Americans shake hands, so I have come home more than once smelling of perfume and my wife goes buggy. Why aren't women curious in this situation? Somebody has their hands on their hubby, that's why. That could mean that they aren't keeping his attention, it could mean that some tramp at his work is looking for a step up the corporate ladder.
I agree that it would be nice for her to be curious, at least to want to know if she could do better to keep his interest.
My personal story is that my wife gained weight, lost interest in sex and let herself go. Instead of trying to do something about it, she said we are getting older and I should get used to it. If there is any indication that I have been around another woman she gets angry and tries to make my life miserable instead of being curious. So, if I have been close to another woman, I make sure I shower before heading home. Most of the time I do my laundry at the hotel before I leave to return.
Women, just some advice, guys are pretty easy to figure out, if you keep us happy, we are like puppies. If you treat us like property and ignore our needs, we will find attention by getting into the trash or pooing on the carpet. If you don't take care of your man, someone else will.