Contagious Sentence Challenge

A teacher asks her students to use the word "contagious" in a sentence.

Sally raises her hand. "Yes, Sally?" She answers, "I was at the doctor's office with my mom, but she told me not to play with the toys in the waiting room because the other kids were contagious." "Very good, Sally!" the teacher said, "Anyone else want to try?" Jessie raises her hand. "Yes, Jessie?" She answers, "My dad tells me not to yawn because then everybody else yawns. He said yawning is contagious." "Excellent work, Jessie! Very creative," the teacher praises. "Okay, one more volunteer." Little Bobby raises his hand. "Yes, Bobby?" "Well," he says, "I was helping my dad with the garden the other day, and we saw my neighbor painting his house. He was using a small brush, so I asked my dad, 'Daddy, why is he using such a small brush?' and he says, 'I don't know, but it's gonna take that contagious.'"