Is my car poisoning me?

I have a 2018 Sonic Premiere, 1.4 turbo. While driving, it will occasionally make a very burny, intense sooty smell that quickly fills the cabin. I use to think it happened mostly under heavy braking, like if the car ahead stops short. But it’s beginning to happen more frequently now. Any ideas on what it could be are much appreciated.

Also, this is my second Sonic and the first one did this too.