One of the world’s oldest, working pharmacies lies just off the bustling streets of Santa Maria Novella plaza in Florence and the quieter Santa Maria Novella church square. It is one of the world’s oldest perfume brands, and arguably the real creator of what we know today as a “cologne.” It’s called Officina Profumo-Farmaceutica di Santa Maria Novella (“Santa Maria Novella” or “SMN” for short), and it was at the top of my list of places to visit on my recent trip to Florence.