What can happen if you do the sign of the cross when you sneeze. i did it i hope i don't die from it.

Superstition v Faith: Nothing will happen if you do the sign of the cross when you sneeze. That comes from an old and theologically unsound idea that the devil can enter into a person when sneezing. You can practice your religious customs freely otherwise. Peace and good health.

Bless you: The sign of the cross is a respect to God. This is a sign of life and is helpful for the believer anytime. Gesundheit!