My wife can be so cute sometimes. A few days ago she was asking why we have air purifiers in the house? I told her because of my alergies (to dust), and to help keep the coal dust in check. After a day of dusting in the house she is now asking me if we can get black lung disease from the coal dust in the house. My first thought was, "are you kidding me?", but she was dead serious. Where I work in the nuclear industry I come in touch with people who panic about things that they know nothing about, so I kindly told her the truth that without the air purifiers we would be dead in five years. She was terified until she figured I was just kidding, then she wouldn't talk to me for a couple of hours. I think I'm on to something here.
Tom