Smoking remains very unpleasant marks in the body, especially in the lungs.
There are various foods that can help in purifying the strongest among them is perhaps selenium (an extremely powerful antioxidant) which can be found in tuna, cod and salmon, and eggs and cereals.
The corn also affect as an antioxidant, but only if it is of natural origin.
Ginger should be consumed in the form of tea from the root and facilitates the breathing to clear out toxins from the breast, and is a good supplement in the meals.
Try to eat nettles, pine needles in form of tea and from the fruits the best ally are oranges, which acting preemptively against lung cancer.