Abnormal habits
Some of the Holocaust survivors that are alive today adopted some odd habits. Such as saving everything they ever had. That is very understandable for one who went through the holocaust. Some came out not believing in god because of their time there others believed in god more because of when they got out. And even others were unaffected in normal life but always scarred for life. Every one had their own reaction to the end of the war, and the end to the concentration camps.