There is also always a particular weird smell in Dominican supermarkets (what I first smelled when I went for the first time to a supermarket in Madrid).
I don't know how they do it in the Netherlands, but there supermarkets do not smell, except for the (fake) bread baking smell.
Another thing the supermarkets should change here is the stupid music they are playing. They all play the same tunes and they think it motivates people to buy more. To me, it only annoys.
Most supermarkets in the Netherlands have come back from the stupid trick of forcing people a certain route through the store, they realized people choose their supermarkets based on how convenient they are to shop. The mayor chain in the Netherlands highly promotes their shopping app. You make the shopping list in the app, then choose to which of the 900 stores they have you will be going and it will sort the list for you to walk as less as possible. What they loose in impulse purchases they compensate by promoting offers on the app, get more customers due to convenient shopping, besides that impulse purchases are not very dutch-like (people shop with a list and stick to it). They also removed all the impuls purchase displays near the cashier, since many customers complaint about it, while often the children, waiting in line, would insist with their parents to buy that chocolate or candy or coloring book.
It's a cultural thing, but it works for the Netherlands (Tesco in the UK has the same philosophy).