Here's a scenario. Spouse #1 lives in Nevada and is retired, over 60 and thus higher risk. Spouse #2 works in California and stays there overnights, returning to Nevada periodically to visit Spouse #1. Should the spouses wear masks around each other at home to protect Spouse #1?

What if Spouse #1 engages in high risk activities with friends such as hosting indoor card games and going out to eat in restaurants? In that case does Spouse #1 still need to be protected from Spouse #2?