Draco smiled and explained "Growing up in a pureblood fanatic house like mine, you learn not to touch things without gloves on as there are many cursed objects simply lying around to harm the unsuspecting guest who may have in some way offended us... A lot of objects in my house are also cursed to react with muggle borns, squibs and so on, so that we can test a person’s lineage without ever asking them and Merlin forbid it offends us in any way they will end up cursed..."