This was the other really helpful guy, Nick. he helped me on and off the Gold Line train. He had just returned from a 10-day trip to France, Romania, and Hungary. I told him what I was doing and tried to explain SFØ. We chatted about how your other senses are heightened when you can't see, and he said that the sense of smell is more powerful than we think. My nose didn't help me much on this journey (I think).