I still refer back to Augie754's website about cigar terminology.
Linky. To me, it makes the most sense, although as far as the sense of smell is concerned, mine are different based on the origins of the stimulus.
Odor is the smell of the cigar in it's unlit state, as it naturally releases, for lack of a better word, chemicals into it's surroundings and fills a humidor with that undeniable tobacco odor.
Aroma is the smell of the cigar AS you are smoking it. A lot of this comes from the draw, and the sense of smell comprises a lot of what I taste.
Scent is the smell of the cigar as it is burning, but no drawn upon, or the trail smoke.
It could be argued that aroma and scent are the same thing, but the way I perceive it, when drawing upon a cigar, the extra heat produced during the active burning period of the draw produces an entirely different smell as opposed to the smoke coming out of the cigar during it's resting (or latent) burning period.
The use of Body has been a double edged sword when enjoying a cigar imo. On one hand, it summarizes the cigar's expected experience, but on the other hand, it over simplifies and detracts from the nuances a person might expect from smoking it. I focus more on the sense of smell, because it is broken into three parts, and adds more to the cigar overall.
For example, the prelight draw is an oral tasting of the cigar's odor, however when lit, and drawn upon, the odor (the unlit part of the cigar) and scent combine with heat to make the aroma, and that is what you smell from the second hand smoke. Of course, body tries to unsuccessfully incorporate these sensations into it's definition in combination with nicotine strength and flavour. Case in point, blowing the smoke through the nose or inhaling the scent through the nose while drawing might give you the but doesn't define the cigar's "body". With that, I really focus on 6 components individually- draw, flavour, odor, scent, aroma, and nicotine strength.