I have experienced what most others here have.
Some figs have no smell.
Some figs smell sweet, like coconut milk with cinnamon.
Some figs smell sour, like cat urine.
I noticed this a lot in Europe the past couple of weeks, most notably with the wide varieties of figs growing all around Monte Igueldo in San Sebastian, Spain. There is one, for example, which is very close to a small shack where food and drinks are sold, it had a very dark green fruit on it with dark red eye, the tree smelled very much like coconut milk and cinnamon. There was another one along the back wall of the topmost 'castle' wall, the leaves were as large as three of my adult man hands, and it smelled ferociously of cat urine. The others I saw had milder versions of these smells, never having both at the same time, sometimes having no smell at all.