Thank you for your query at DoctorSpring.com.
It was very nice to hear from you again.
Toxins can sometimes very very rarely occur in the food. Of those 9 in 10 may cause only vague discomfort for a day or so due to gastritis. Its only in 1 in 10 chances that intoxication with a toxin can happen where there can be liver or kidney toxicity. Even in that case, the intoxication symptoms occur within 2 hours to 24 hours of food intoxication. If you are comfortable for atleast 72 hours there is no chance that there could be any intoxication.
You are safe.
There is nothing that can melt organs or drill holes in them except acids, which would also cause damage to the skin etc. You mentioned that things like these happen in science fiction movies. It is clear from the name itself that what you see in them is not real. Fiction means something untrue and not real. So please do not worry about things in those movies happening in real life. They will not.
These thoughts are troubling you a lot. Your question states many times that even you feel that the thoughts are very unrealistic. You need to get treated for these thoughts more intensively.
Hope this helps.
Dr. Srikanth Reddy MD.