It’s a good idea to avoid both. Drinking alcohol is not a nutritionally sound use of calories, but beyond that, it causes vasodilation of the blood vessels and increased flow of lymph. This is not handled well by an impaired lymphatic system, and so additional swelling can result. If you do drink alcohol, monitor the swelling in your affected limb. Smoking, of course, carries many health risks, and narrows the blood vessels, preventing fluids from properly flowing out of the affected limb.