I love the aroma therapy provided by guitars. As you say, each tonewood is different. My preference is the Rosewood family but wood in general ... it's all good. I have a build underway right now and the luthier builds with "double sides". When he asked me what kind of wood I wanted (for the inside) my thoughts immediately jumped to aroma. No one is gonna see them so, why not. Rosewood was my pick. In that same vein, when the luthier decided on the wood to brace the bevels (also inside) he chose Spanish Cedar based on our prior discussion on aroma.
Great thread. I love the smell of a guitar. It inspires music!