Over time, the meaning changed to refer to people who sneeze could be poor health, supporting or is going to be a cold and have a bless you say it would mean asking very quickly disappeared.
Over time, the meaning has changed to mean someone who is sneezing may Wailing poor health or are about to have a cold. Then someone says bless you, it would mean I lost the other.
As time passes, the meaning has changed. I mean, Sneezer might be because of poor health or are going to catch, and they say, bless You will mean, get well soon.