That's so interesting about sesame oil. There was only one restaurant - on 75th and 1st - that gave me a headache and nausea. Naturally, the food was absolutely delicious, had the best reviews, and I had to avoid it like the plague. That's the only Chinese restaurant that ever gave me a headache.
I have CRS so bad, that besides the headache, parts of my face went numb.
There was the LAST Cantonese restaurant, which was FANTASTC, in the high 50s, on the East side, that had THE best Chinese food ever, when we first moved back here. You could ask for dishes to NOT be cooked with sesame seed oil. It's sadly long gone now. :-(