Removing Perfume Smell from Clothing

I bought some jeans at the Goodwill last week and when I got home and smelled them in my clean home environment, I could smell perfume (there were too many odors in the store for me to detect it there). I have washed them numerous times, including in baking soda, and put them in the dryer, and I can't get the perfume smell out. I even tried washing them with Pet Odor Eliminator to see if that would do anything.