Scented Feminine Hygiene products. Why?
Seems to me every woman who's ever tried one would, thereafter, recognise the smell.
And every man who's lived in close quarters with a woman who has tried one would also, thereafter, recognise the smell.
Thus many many people recognise the smell of a scented feminine hygiene product.
Far from discrete or pleasant then, a scented feminine hygiene product signals to a large portion of the population "Hey! I'm wearing a highly processed diaper-like article designed to absorb blood!"