Do I have to stay home if someone in my household is sick?

I just got over a really bad cold. May have been covid. I didn't test for it. I've been staying home just in case. My aunt lives with me, and now she says she has a scratchy throat, and a runny nose. It's obvious she caught what I had. Does this mean I have to stay home as long as she's sick too?

Do I have to stay home if someone in my household is sick?
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