I prefer these shops to be called charity shops, with the supported charity named, rather than the euphemistic “opportunity shops”.
Recently a building firm provided a set of open shelves in a nearby town while they worked on a hospital annex. People could put any clean items of clothing, soft furnishing, shoes, etc. on the shelves, to be taken by anyone who wanted/needed them, for free. It was locked overnight. There was a rapid turnover, and it worked extremely well, with no money involved.
It ceased to exist when the building work was completed, but for several months it provided an imaginative way of recycling, and probably helping people at the same time.
No smell, as it was outdoors. (Also, as everything was visible, things were always folded neatly and well-presented).