That’s what my 13-year-old son proclaimed to me when he returned home from school. I immediately checked his head and, when I didn’t detect a fever, I asked him what he meant. He explained that when he got on the school bus for the ride home, the bus driver was grumpy and most of the kids seemed in a bad mood. So, Connor decided to smile and he kept smiling until all the kids around him were smiling back. (He never could "infect" the bus driver since she kept her eyes on the road.)
Set an intention to spread joy today, with a big, bright smile or a genuine compliment or both. You can be contagious, too!