It had gotten around.

The guy at the dairy started it.
He smiled at the milkman, as the icecream was dropped off in his shop.
The milkman petted the dog at the door. He smiled at the woman at the end of the leash.
She laughed at the local clinic, and the doctor caught the virus. She grinned.
At lunch the grin was still there, and whizzed up the hill as the nurse bought some lunch.
The cafe lady showed off her dimples, as she picked up her daughter from school.
The daughter waved and winked at her best friend's brother.
He beamed and raced down the hill, to buy some candy from the dairy.
The smile was still there as he puffed into the store.
The guy at the dairy started it. He smiled.