IMHO, most laundry detergents sold in France are VERY highly scented. Guess it comes from the old tale about the French loving perfumes and such. Walking down the detergent aisle of Monoprix or Ed's is likely to bowl one over with powerful scents.
Some think the high scent factor has to do with the fact many people in France, especially those living in urban areas, still line dry their laundry. Line drying can mean anything from a true clothes line or such, to simply draping all that wet laundry all over the apartment/house to dry.
Savon de Marseille,
There are many scents to unscented variations of the soap, same with the laundry products claiming to contain SdeM.
In it's pure form, SdeM does not have a scent, much like many soaps, other than whatever fats, oils and such that go into production. Have a good stash of SdeE and different brands have a different smell. Savon d'Alep, the "middle-eastern" version of olive oil soap, is scented with laurel leaves, so there is that as well.
The box of "Le Chat" shown on the right side of the picture, is soap flakes, sold for laundering baby's and children's laundry. Billed as hypoallergenic, it contians mainly soap, phosphonates and that is pretty much about it. No fragrance or such additives.
One assumes the makers of "Le Chat" have found a formula that allows a soap based laundry product to be used in washing machines without getting too sudsy, and eventually gunking up the washer.
L.