Laughing Gas Word Search Puzzle – Search Characters, Actors and Actresses. Word Search Puzzle Solver. Although only a dental assistant Charlie pretends to be the dentist. After receiving too much anesthesia a patient can't stop laughing so Charlie knocks him out with a club. Find out the following actor, actress, character names, and other movie-related words hidden in this word search puzzle based on this movie.. This includes identifying and searching for words that are related to : Gene Marsh, Mack Swain, Fred Hibbard, Alice Howell, Fritz Schade, Josef Swickard, Charlie Chaplin, Helen Carruthers, Slim Summerville, Joseph Sutherland .