Some serious studies had shown that some food stuff can help cleaning your lungs from nicotine and tar! Here are some of them:
Brazil nuts; it is full of antioxydant and vitamin E, it is very good to your lungs!
Eat one per day!
Onions; filled with antioxydant, it removes toxins which are present in your lungs and it slows down the multiplication of cancerous cells. 1 to 7 times per week!
Ginger; Ginger will open your bronchus and help expulsing mucus, so it mainly can heal cough. It has therapeutic properties; antibacterial antiseptic and antioxydant. To consume regularly!
Grapefruits; Contains limonoid which also has great therapeutic properties. 1 to 4 times per week!