Vampire Sneeze
In one scene of the film, Freddie coughs into his right elbow while walking. But if you want to get technical, this “vampire cough” (also referred to as the “vampire sneeze” or “Dracula sneeze”) technique where you cover your mouth with your elbow didn’t come into common knowledge and use until the early 2000s.
Source: standard.co.uk
In the early 2000s, it was publicized by the Centers for Disease Control and Britain’s National Health Service during the Influenza A (H1N1) flu outbreak in an attempt to protect others from germ transmission while keeping your hands clean.