Artist Richard Dupont was escorted out of the Art Production Fund’s “Good & Plenty” event Monday for smoking inside the Park Avenue Armory, sources said. Security spotted Dupont lighting up and asked him to leave. The Dupont heir was allowed back in once he finished puffing. Then things got really weird: Performance artist Eloise Fornieles perched on a ladder naked, save for a pair of horns and blood dripping from her mouth, scribbling observations in a notepad and dropping them on the floor for the gathering to read during dinner. Estée Lauder’s John Demsey, Amy Sacco, Yvonne Force Villareal and Clarissa Dalrymple attended.