I have a contact who has tested positive on lft for covid. She’s the third in her household to do so and has lost her sense of smell so I’m pretty sure it is genuine rather than a false positive. She point blank refuses to get a pcr. I’m fully vaccinated (approx 4 weeks post 2nd jab) and want to know what to do. If she’d get a pcr I presume I’d get a test and trace call to let me know. But as she won’t, I feel a bit stuck. Am I supposed to isolate? Can I take tests instead? Are LFTs good enough in this scenario?