Two possibilities...

What you eat will change your body chemistry a bit.

But I am more inclined to think that what you are experiencing is the side effects of ketones. They are the by-product of your fat breakdown and are excreted by urine, sweat, breath... etc.

From what I understand there is not much you can do about them. Brush your teeth more, a good deoderant... which you are probably already doing.

The good news is that it seemed, to me, that they were noticable during my more rapid loss in induction but since then have leveled out. That or I've gotten used to the scent.

Others might have other experiences.