For re-opening:

The complete guide to cleaning your headphones during a pandemic. “Going outside without music or podcasts to listen to can be a drag. During the coronavirus pandemic, however, you might consider taking some extra precautions so you can jam out safely during your grocery runs. The CDC recommends properly cleaning personal electronics as necessary. While headphones and earbuds aren’t specifically named in its guidelines, you probably touch them enough to warrant proper disinfection just to be safe. The good news is there are fairly easy ways to do this.”