I didn’t notice any scents or smells, my breast did itch intermittently for about a year or so. They ultimately told me that itching can be a sign of cancer. It itched right on the nipple area. I thought at first, dry skin but nothing seemed to help. When I finally remembered to tell my Dr, she did a mammogram and then they did an ultrasound. They saw something but after looking at older mammograms decided it was just dense breast. They should have looked further as 18 months later I had a 16mm cancer. So yes, anything different; smells, dimples or itching could be your early warning sign of cancer.