"There are people smoking right now," TMZ quoted the singer as telling the crowd at Thursday night's gig at an open-air stadium.
"No smoking! ... If you're going to smoke cigarettes, I'm not doing a show," she shouted. "You don't care about me? I don't care about you. All right? Are we going to play that game? I'm not kidding. I can't sing if you smoke ... Entiendes [understand]? You're looking right at me and smoking cigarettes, like I'm a stupid [expletive] idiot."
TMZ said the offending smokers eventually put out their cigarettes and Madonna went on with her show.