Shoes that are breathable with holes like Crocs and dont retain smell (like with fabric) won't make your feet smelly. If anything, closed shoes with no holes and no breathing will smell terrible after a work day (like high heeled type womens shoes)
yeah it's weird, because open shoes actually wouldn't create more smell, it reduces it. i guess they mean they want smells enclosed and only when they get home and open their smelly closed shoes.
And this is from someone who thought crocs were dumb in the 90s and 00s.