I don’t put much trust in anything anybody else says, unless it seems to gel with my own experiences. I have, however, read about “loosh”. Sorry, but I don’t have a high overall respect for Robert Munroe (though I’ve met him and I’ve bought and tried to apply three of his books in the distant past). But let’s assume his story about loosh is factual.
The only sense in which I can make “loosh” fit with what I have experienced is that it refers to the negative thoughts and emotions that I said above that the air in cities is thick with. I use the word “emotion” to mean something quite distinct from “feeling”. Feelings are things we directly express. But once we stop being little children, our feelings are often colored by emotions. By emotion I mean what Jung called a “complex” – which is any stuck negative feeling combined with certain fixed thoughts or beliefs. It’s true that every day we release tiny parts of our complexes into the 4D “atmosphere” around us. But these are our psychological/spiritual waste products. And as we evolve spiritually, eventually each of us reaches a stage where they don’t produce much “loosh” any more. I don’t buy Munroe’s story at all about how we were designed to be walking loosh factories. (It sounds to me like a sales brochure, actually. All tourists love a quaint story.) Rather, I happen to know we are all the multiverse and we all chose to go as “far out” as possible for a time and experience the most opposite things possible to what we really are.
Yes, beings from higher dimensions (excepting, perhaps, the lower fourth) are generally less emotional than us. Of course. It’s also true that the range of feelings is smaller in the higher dimensions. But that’s simply because in 3D the polarity is greater than it is higher dimensions: you can only feel hot to the degree you can also feel cold intensely, or sweet to the extent you can also feel sour, and so on. I don’t believe human beings are different in that respect from ETs from other 3D worlds. I’ve also read about abductions by apparently more positive and friendly greys, and how the abductees witnessed intensely strong feelings being felt by the latter.