A Random

SCIFI.radio story

Earth unleashes a cosmic storm of chaos and unpredictability on the universe in the form of door to door salesmen who are friendly but incomprehensible even though they have seen every episode of Firefly and might be overpowered by a bunch of kids playing disco music on boom boxes , but scientists create a new weapon which kills them all.
The End.but they die from catching the common cold.
The End.