In a video from the Vancouver, Canada, set of the show’s fifth season, “Riverdale” actors KJ Apa and Camila Mendes take a swig of mouthwash in an apparent effort to stave off the coronavirus before a kissing scene.After locking arms and sipping, the actors pass off the cups to a gloved assistant and proceed to their intimate business.“Our new normal is washing our mouths before every take of a make-out scene,” Apa, 23, captioned the clip.But before you go swishing Oral-B ahead of your next