WARSAW — Every day outside of a shop at 61 Mokotowska Street, an intriguing dance of sorts happens: A smattering of men and women of all ages walk out onto the sidewalk and smell the top of their hands or the inside of their wrists. Some smile, others look quizzical, and a few seem to simply get lost in thought. After a few moments, they re-enter the shop and, after a short interlude, the dance repeats. Read more