My Mom Smokes All the Time Next to Me?

Every 3-6 Minutes my Mom Lights Another Cigarette Right Next to Me, in the House, in the Car- I've asked her to Stop or Not Smoke as Often and Tried to Convince Her, but She Says She Smokes all the Time her Whole Life and so have Her Friends and Everybody's Ok, and that the Oldest People in the World Smoke and It's Good for You to Smoke, that She'll Never Stop. If I Scoot Over She Yells at Me and Tells me I Have an Attitude and that I Should Go to Hell. What Should I Do? It Gives me a Huge Headache!