Worth a quick read...
Here is an interesting idea about why Charlie, living with two covid-positive housemates, and I, also exposed through his household next door, and at the recent convention we both went to, where someone exposed everyone, have tested negative: https://www.aljazeera.com/features/2022/1/25/why-you-may-not-get-covid-19-even-when-those-around-you-have-it?fbclid=IwAR0-MB1UGRvzm5se9uElPYUg-syTA7Jg16lpwsZSMSj9emoD0mepfj5ce5w&sf158996694=1&sf158996646=1 Sign in to see full entry.