Chrissy Teigen says her swollen lips were caused by an allergic reaction after biting into an orange peel. “You’re all just gonna think that I got lip fillers,” Teigen joked on social media. “I bit an orange to try to open it, and I think there must have been a pesticide or something on it,” she said. “If you notice tongue swelling or difficulty swallowing, that’s a life-threatening situation, potentially. So go right to the emergency room and have it evaluated,” dermatologist Dr. Doris Day said.