Voldemort doesn't have a nose because of the defect of body remodeling. Before Voldemort's body was destroyed, his soul escaped. Voldemort wants to reshape his body, but the reconstructed body has no bones in its nose, so Voldemort's meat has no support, and the whole nose is flat, as if it had no nose.

Voldemort is the villain in Harry Potter, a magical novel by British writer J·K· Rowling. He is the leader of the Death Eaters, an extreme pure blood wizard. He extremely rejected Muggles, Muggle-born wizards (mudblood) and descendants of wizards who could not cast spells (dumb guns), and was the initiator of two wizard wars.

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Voldemort is called "the most dangerous dark wizard in history", and most people dare not call him by his first name. And in the later period (Harry Potter and the Deathly Hallows), the name was even protected by death eaters. Once someone says it, it will break the magic barrier, cause a commotion, and make it easy for death eaters to trace it. People usually call him "someone you know", "someone who can't name" or "the dark Lord" (death eaters often call Voldemort).