As per my knowledge all fruits contains high or low percent of vitamin k. Long term restriction is not advised, plz check with your physician. Since vitamin k is required for other beneficial benefits of body. Your second question on cigarette residue - is questionable. Since the damage has already happened by smoking, there is nothing like removing the residue. We generally advice to take rich sources of antioxidant in diet, look for it, u may be talking about "cleansing diet"... Again their is no evidence. Since your husband is on medication, wait for some time and slowly change the eating and lifestyle habits. Good luck...