Does anyone know what casuses urine to have a strong odor like iodine?

A few month ago i had a CT scan and i had to drink a 3 gles of lemonade containing iodine. For the next few days when i would urinate or sweat it had a strong iodine smelling scent. Now i am smelling this again but it cannot still be in my system and it is not a strong? Any suggestions?