I use to love smells, and now I hide from them

I am a bit desperate. I have been suffering from cluster and classic migraines for 9 years. My symptoms and triggers have evolved, or maybe I am becoming more aware of them. Smells. Thats my problem, how do I live in a world of smells, especially when they invade my space. So here is my problem. I live at home with my mom and dad, and they are amazing, all scents have disappeared, we use scentless everything and it works for me, body ordor has never hurt my head. But my brother - who comes over alot - is like a walking scent bomb, with perfumes, smoke, and incense clinging to all the spaces he goes into. They make me sick - literally. I've talked to him, my parents have, I just don't know what to do! I hate having to hide in my room until he goes away, or get a migraine. Its become such a problem that I get anxious knowing he's coming. Smells are making anxious. I just need a little advice.