I said it reeks of burnt sugar; but yes the larger explosions will smell more like general 'burning' the more he is destroying. It's really what makes the shit smell raw on top of the burning sugary smell; adding to that 'worse than burning flesh' smell. But assuming his key fuel is purely Nitroglycerin, then it should still smell like mostly burning sugar.
I think what your grasping at is that if he blew up a tree, would it be the Nitorglycerin+the wood burning; in which case, yes it would, along with any other fuel source he ignites/singes.>>183222857
You are aware you can't inhale liquids, and even then it's not something I've really tried. The glycerin is what smells sweet in Nitroglycerin, and you get a whiff of it as you burn it. The vapours smell extremely similar; but have a slightly acrid hint to them from the Nitric/Sulphuric acid being heavily overpowered by the sweet Glycerin. As you can guess, inhaling it directly isn't exactly good for your health, so I can't comment too much on the issue and I don't have much experience in huffing exlosive fuel fumes.