We live in a 7 story building at the corner of Arenales and Aguero. There are three apartments to each floor. We see our neighbors rarely, but when we do its typically crammed into an elevator that is 30 inches square. In these brief encounters it is too close to really speak, the reason i believe is as much to do with the fear of spitting on one another as our bad spanish, and so we stand quietly and embrace their aroma. Mostly its some nice but somewhat old fashioned scent, other times you can tell they recently stepped in dog piss.