Husband and I went over to Sheringham to have a look at the sea and take a short walk on Christmas Day. It was a bit windy and I forgot about his African nose. (He has a dear little black nose with very wide nostrils). When we got back, he started sneezing and his nose was very blocked, due to the wind having inflamed his nasal passages. Luckily he still has several Covid tests, and he tested negative. I reckon Africans are 'designed' to withstand great heat and breathe in fresh air through their wide nostrils.
I haven't had any cold for several decades now. (Good immune system).