It doesn't matter. Although organ transplantation may gain part of the donor's personality and memory, there is no relevant report on blood. Blood transfusion has a long history. Since there is no case that blood transfusion will gain the memory of blood donors, it certainly has no effect.
A person's personality is multifaceted. The formation of a person's personality mainly lies in daily life, especially childhood experiences, and has little to do with physiology.