When someone celebrates their birthday is normal to invite the closest family and friends to sing the happy birthday song that will end with the birthday person blowing candles from a birthday cake and sharing slices of that cake with everyone!
Well, I wonder how people never noticed how non-hygienic this practice is!
Eating a cake that was spread with microbes from the blow of the candles on the cake? Hopefully the birthday person is not ill and wont have a flu, cold, Covid 19 and others!
As people say " what doesn't kill you, makes you strong!"