Unlike cosmetics, there is no way to let your nose decide when buying detergents, as the packaging is sealed. If you open the packaging after purchase and your nose says "no" to the product you have bought, you have to throw the detergent away, which is not very environmentally friendly considering the quantity per packaging.

That's why I would like to suggest offering detergents in such a way that you can test their smell in the store before you buy them.