On campus, there is a concrete building, hated by many people, because they believe it is ugly. I go there time to time for meetings and such. Every time instead of taking elevators, I take the emergency stairway. The whole thing is made of cement (wall, ceiling, and stairs). It is usually cooler than outside and it smells musty. It is more like the smells of the first few drops of rain. I love that emergency stairway. I always take my time when I am there. It reminds me of very old cob houses in Isfahan. My mom always says they used to spray the walls with water to recreate the same smell.