Be correct. The linkage is between use of the pill, when combined with smoking tobacco; there is not at this time any substantial evidence linking only use of the pill to breast cancer.
Actually, the link between smoking and the pill is related to increased risk for deep venous thrombophlebitis, pulmonary embolism, stroke, and myocardial infarction.
The link between the pill and breast cancer is completely independant of smoking, and is well established, with 80% of all published studies showing a positive link, higher for younger women and when used before first full term pregnancy.