Infectious words comes from the word "infect" means something that is capable of being transmitted so we call it infection, which means it is spreadable like a disease. So, the answer could be: 1) His disease was very infectious.
Colin used to think he was going to be a humpback like his father, but when he started seeing Mary he started to have hope. Mary changed cause she found out how spoiled she used to be and wanted to help her cousin.
