You walk into your grandparents home and there’s that odor that you only smell around them or around other senior citizens. It’s often described as smelling a bit musty, stale, or like mothballs. When we’re little it’s a bit more annoying and most of us as kiddos assume it’s just our own grandparents Once we get older we realize not only are we not alone, but we may even start to smell it when we visit our own parents. We may smell it when we walk past older people, sit down at a table in a restaurant where they were just dining, or even in an elevator. It’s a universal smell that’s not just c…