One of the tell tale signs of cheating is improved grooming habits, so of course she's going to be a little insecure and wonder what you're up to. All of a sudden you're more concerned with your appearance and making sure you look and smell nice all the time.
It helps a ton if some of the boxes that come in the mail include something nice for her. When she asks what's in the box and you go "oh, that one's for you" or "here I have something nice for you to try" it goes a long way.
If you get her involved smelling things and asking her opinion it helps too.
Now I'll get the "mmm, you smell nice" instead of the "who are you trying to smell so nice for?"
It will pass with time as well but giving them some additional attention really helps.
It helps a ton if some of the boxes that come in the mail include something nice for her. When she asks what's in the box and you go "oh, that one's for you" or "here I have something nice for you to try" it goes a long way.
If you get her involved smelling things and asking her opinion it helps too.
Now I'll get the "mmm, you smell nice" instead of the "who are you trying to smell so nice for?"
It will pass with time as well but giving them some additional attention really helps.