Getting off the cigs might be all that's needed, the body spends an inordinate amount of resources detoxifying what's in the smoke, free those resources up & things might get back toward balance of their own accord.. I really did feel quite ill before I quit & I have to say 2 years down the line, I do feel a great deal better for it.

Still miss a cig very occasionally but it's more like the feeling of fancying an ice cream and not having one to hand, than a 'craving'.. totally dealable with. I was on 40-60 a day & never thought in my wildest dreams I would ever quit, but I did, and it was rapidly deteriorating health that gave me the final push to do it.

One of the biggest touchstones I used to get off them was to promise myself that I would never, ever allow myself to become a self-righteous antismoker.. so I'll shut up

Argie's suggestion about Bovril got me thinking.
I wondered if perhaps a stew or hotpot type dish, cooked with lots of veggies & spuds, and the visible chunks of meat removed before eating, might help to overcome your (understandable) reluctance? I'm sure some of the essential nutrients etc would be in the sauce even though the actual meat wasn't.

Alternatively, would it help if you were just given a meal to eat without knowing or seeing the ingredients before trying it? Obviously you'd have to get someone you trust to prepare the food for you, but I daresay a few of us would be prepared to "have a go" if you need or want our help.
(I have a lovely tomato-based casserole type recipe that everyone seems to like )