I just bought a bag of smokeless solid fuel to burn on our multi-fuel burner. Not because I've a problem with wood, but I had a yen to try something different. I liked the idea of a pleasantly glowing bed of coal just as I remember it.
Firstly the stuff is unbelievably filthy to handle. Yes I know it's supposed to be like coal, but this stuff leaves coal standing when it comes to transferring thick black marks to its surroundings.
Secondly it isn't all that flammable. Not quite in the asbestos league, but not easy to get going.
Thirdly, when it finally deigns to burn, it smoulders with a sullen glow, a dull red gleam about as welcoming as the glint in a demon's eye.
Fourthly - the smell. Imagine setting fire to a pile of antique bakelite phones. It's a little like that, but not quite so acrid.
Why I bought something with eco in the name, I don't know, because eco means crap. It wasn't that I wanted an eco fuel, but this is what they had so I bought a bag to try out.