One day, when Bucky is eating in a nice yet cheap food place, he suddenly remembers the times he was fed at Hydra and got severe food poisoning; he recalls being unable to stand up without throwing up or feeling like he was going to throw up and how Hydra forced him to work more through it. He's even thrown up in the mask and choked on his own vomit, causing him to fail a mission.

The memory puts him off his meal so he just gets up and leaves but it causes him to avoid eating for the rest of the day so Steve/someone else has to prompt him so he doesn't starve himself out of paranoia and fear of getting food poisoning.

+ Hydra punishes the Assert for failing with feeding it raw chicken to make him even sicker.

++ The person ends up force feeding Bucky which makes him panic and vomit the food back up.