Depending on the setup, some places just have a drop chute at the end of the pit to drop it into the back of open trailers, but other places have very large underground compactors that crunch it all together and then gets carted away. The compactors in my area are strictly off limits, only technicians are allowed near the machinery room, and it has to be shut down for them to be near it too
I am a commercial garbage truck driver. And I can confirm that in a landfill of that size it probably does not smell overly terrible. But I mean that could just be because I’m used to it 😂. I guess it’s more opinionated than anything