NOSE FOR QUALITY
ROD Stewart says he doesn't do cocaine anymore because it's just not as pure as it used to be. The rooster-coiffed crooner, 60, longs for the days when dealers didn't mix the drug to maximize profits. "I don't know why anyone would want to take coke now," Stewart tells contactmusic.com. "It was different in my day, because it was all so much purer. Now these dealers mix it with salt, washing powders, anything they can get their hands on. Kids just don't know what they're taking."