The global environment has been balanced, the conditions to pass through the phenomenon have been lowered, plus there's a whole bunch of phenomena appearing here every day, so new events occur daily.
In due time, it's likely the residents of Hazy City will become desensitized to all kinds of incidents. Upon seeing something abnormal, they'll watch the spectacle for a bit and then continue with their own business.
Television and online news are also spreading related information, advising people that when encountering weirdly dressed beings on the streets, never assume they're cosplaying.
The best course of action is to stay away from them. If the opportunity arises, report it to the authorities immediately. Even if they seem completely harmless, it's better not to engage directly.