Oh man, I feel this. My one attempt at a 'calming' steam just made my whole apartment smell like a soup gone wrong, so maybe don't take my advice. But for real, maybe try using way less of the strong smelling herbs, or mix them with something really mild like plain chamomile. It's probably a trial and error thing, where you learn which ones are total bullies in the mix. I'm still learning that with my cooking, to be fair.