Sam is 10, so she's older and more prone to developing issues. B/C V's have less protective fur, they are prone to skin stuff. A lipoma is a benign fatty mass, and V's are prone to them as they age. They are also prone to get spots and small raised brown dots anywhere there's no fur covering, like around the eyes or nose. I'd rec having new below the skin ones aspirated to make sure, as they can look like mast cell tumors which are nasty, cancerous growths.
I'm not sure about odor, V's are remarkably undoggy like in their smell. So, Id have the vet check this out, it could be a fungal or yeast somewhere, typically the ears.