[jumpy]

An expedition to everest to clean the place up would be a better idea.
In Chris Bonnington's 'The Everest Years' he describes how both he and fellow climbers got dysentery at one of the higher camps from using snow and ice, to cook food and make drinks, that was contaminated with human faecal matter.
And that was way back in the 70's.

Never mind all of the kit and other general rubbish left behind on the mountain.

There may well have been romance and trepidation in the early years of mountain conquering - being the first, or at the very least, one of the few to die in the attempt - leaving behind the mystery of who, how and when. Not so much these days. Just like everywhere else human beings go in profusion; refuse.