Treatments can cause smell, taste aversions, and sensitivities. As was done, is removing themselves from the environment when certain foods are being cooked, cooking elsewhere, not cooking certain foods etc. may be helpful. I couldn't take the smell of garlic my last two treatments, even on people's breath I could smell from a distance, even my own hands if touched weeks earlier, the smell lingered. I also had to spit out food due taste, texture, like potatoes, bread, which I didn't eat for a year or two, icecream just starting to taste sweet again, and not gritty after several years.
One thing that may help the sensitivities or aversions is drinking a strong flavored drink like rootbeer, grape, the same with a hard candy. Some use herbs to mask flavors, some don't use. I have a problem with dried Thyme now.
It's also best to stick with familiar foods, rather than unfamiliar. Eat mild tasking foods, not too hot, spicy, sharp textured. More mild carbohydrates, rather than proteins that have strong flavors.
Eventually it gets better, back to near normal. What you don't like today you may like tomorrow, and vice versa. For some reason, I''m not eating eggs the past two months like I was befor for some reason. Whatever, I just move on to eat something else. There's plenty of food out there to tasted, and be liked.
Maybe try a buffet one day. Saves money, energy, to see what is liked and can be eating instead of wasting.
Good luck.