Maybe I only say this from the privileged position of having also visited Paris, but Paris does NOT smell "always pleasant." The writer is interested in literature about the meditative aspect of walking and the tantalizing rumination on place and setting---but he has not yet engaged with the long history of literature that purposefully paints Paris as a purely romantic place. I find it ironic that the writer can be so observant of the city and all its nooks and crannies and still be so distracted by its fantastical grandeur, the city of lights, city of love, yada yada, to write about the less-pleasant parts. OR---to not at least write about other writers who have represented Paris from that meditative perspective?
I'm not saying that Paris ISN'T an attractive and deeply influential location out of all the world's locations. Of course it is. It's Paris. I'm just unconvinced by (and, frankly, a little tired of) la vie en rose.