Elevators can be wonderful oases of quiet. I love the peaceful solitude as i wait for my floor. Sometimes you can smell the traces of previous occupants. Scents of food, smoke, perfume, new clothes and chewing gum are left in their wake, as necessity forced them to pause for a moment.
In my experience, i have found that people riding elevators tend to quietly look forward, as if attending a church service. Often when people are in pairs or groups, their conversations will be hushed or cease altogether.
Of course overzealous cologne application, cell phone conversation, and piped in music can easily dissipate this almost reverent atmosphere.