Mighty Lak a Goat is a 1942 Our Gang short comedy film directed by Herbert Glazer. It was the 209th Our Gang short 210th episode, 121st talking short, 122nd talking episode, and 41st MGM produced episode that was released.
They walk to school and get thrown out of the classroom due to their smell. Then, being free from school, the gang goes to see a movie called Dont Open That Door at the theater. The moviehouse cashier notices their smell, but they head into the auditorium. Then even the actors on the screen cannot stand the smell and stop performing. They finally get removed from the theater and remove their clothes behind a tree.
Source: Wikipedia