Earlier quoted context omitted.
For me, scents are rich sensory experiences. Yet I can’t describe cinnamon to you, other than that it smells like cinnamon. It’s like an opaque pointer, I can compare equality but not inspect it beyond that.
Verbal thinker here: Can imagine smells (and 3D scenes, and musical sounds).
I can do reasonably complex verbal, mathematical, or IT work just in my head, and often have an internal monologue running while doing so. It not that my working memory[1] is especially good, it's just that if I'm spending more than a couple hours on it, I've mostly memorized it, so I can think about the solution, or at least the next step or steps, and then type or write them out. (Closing my eyes can help eliminate distractions, but isn't required. Good headphones playing something non-intrusive and blocking out audible distractions are at least as important, probably more important.)
What I can't do in my head is solve complex problems in real 3D space. If I'm trying to fit components into a box for a hobby project, or doing some moderately complicated carpentry for a home-improvement project, I prefer being hands-on. Need to be hands-on, really. I can't fit the pieces together in my head, even if I'm looking at a page full of all relevant measurements. 3D modeling software is okay, pencil and paper and drawing tools a very poor and painful substitute.
Interestingly, when I'm working with a hands-on project is one of the few times when I can make a very sharp mental picture. I can be looking at a piece of lumber, or a bare enclosure, and know it exactly what it will look like when I'm done.