Some company has designed a suit called the Micrashell, which is kind of like a half-spacesuit with its own ventilation system. It's airtight, but only covers your upper body . . . so you won't have any trouble hitting the restroom. It has a camera, speakers, and a wireless communication system, which will even allow you to "mute" people around you.
Apparently, the idea is that the venues would own these suits . . . give them to attendees . . . and sanitize them between uses. The company says they hope to have them ready by the time concerts start up again.