Fairly regular anon here – GF Anon's Mom popped positive for COVID-19: In later 70's; Asymptomatic; Cares for her hubby and a couple others who have also been tested = negative.

And this is the 2nd time I have run across this scenario personally so far (2nd-3rd hand anecdotally). I'm telling you, these test-kits are randomly popping positive to scare people. No other reasonable explanation.