When I was a kid I had access to a handful of "golden age" SF mags, out of which a couple of stories stick in my mind.
One of them had a man find himself in a situation where all the people were beautiful but eventually turned out to be androids caring for the last two human children who were held in suspended animation due to a virulent plague.
He is sent back to his own reality to try to find the cure, with the only clue being the word "Dachwu" which was the start of its description.
The story was accompanied by cover art showing the hero defending the mandatory scantily-clad maidens from a distinctive spherical beast which walked on the tips of (four?) pointed legs. I have seen that reproduced in a book on SF artwork which I no longer have, but I don't think the cover mentioned that specific story and I've not seen it looking through any of the archive sites.
If the name isn't "Dachwu, remember", that phrase definitely cropped up in the story: possibly as the final line. However I'm finding it remarkably difficult to Google, in part due to its similarity to a placename but after all these years I'm also likely to be mis-spelling it.
If it wasn't in the magazine described in my question at Yet another "spacemen and caveman" story then it was part of the same trove.
Any help appreciated.
