I'm looking for a satiric short story about first encounter. (I probably read it in the seventies, so it's not so new). A UFO comes to Earth, and a pool-like thing comes out with alien-like octopuses in it. The humans try to make contact in every way possible: speech, music and films, but in vain. In the end, the aliens depart and we read their report, written by smell, saying that humanity is not worth making contact because they produce only weak smell. Can anyone remember this?