This sounds like a rude roommate to me. I am very smell sensitive and my hubby likes a lot of smelly things. We have had to negotiate both types of scents and strength, but we’ve made it work and found smells we both like and a strength I can live with.
So, while I understand your roommate’s issue, the fact that SHE is wearing something scented but doesn’t want you to wear anything (even the exact same thing) is selfish and rude. If there’s another issue (like you put on too much), she should address that, not insist you can’t wear anything scented while still wearing stuff herself. I would be frustrated, too, when confronted with such a double standard.
I agree with the advice to talk to an RA. Get a neutral party to help, and try to continue being a good listener and cooperative even though you probably feel like behaving different because you’ve already made a good-faith effort to compromise and she hasn’t. Good luck. Would love to hear how this ends.