'INFECTIOUS' in a movie sentence | examples for 'INFECTIOUS' from movies

Phoebe: No, we were just laughing. You know, how laughter can be infectious.

"Friends", season 1, episode 9

Jennifer: Lisa’s laugh though…There’s—It’s so infectious. It’s one of those things…just forget about it. Once it starts, it’s all gone.

"Friends", season 7, episode 24