The post above was my non-dramatic way of saying my daughter tested positive. It was a clear chain: boyfriend of one of her roommates, that roommate, the OTHER roommate, then her. The boyfriend and the first roommate were asymptomatic. The middle roommate lost her sense of taste, and had what you would call a 'mild cold' in any other year. My daughter is largely asymptomatic (sniffles, but she has asthma and allergies and so basically sniffles ALL the time; it's a running joke between us when we talk on the phone: "are you crying?").
I can't speak to the boyfriend and first roommate, but the second roommate and my daughter are quarantining together, and neither has had a fever at all this entire time, even though that is one of the "quickie" screening methodologies.
I get where you're coming from, Lordxizor, but I also see the other side. I think there's an argument against worrying about the false positive; if one person falsely quarantines, it's not the end of the world. It's the false negatives and the asymptomatic people spreading the virus unknowingly that we have to worry about.