Risks for HIV in adults are:
1) having unprotected, penetrative vaginal or anal sex, or
2) sharing IV drug needles with other IV drug users.
You had NO risk for HIV, even in the unlikely even that this actually happened. In reality, this is OCD-like thinking, not rational thinking. There is no obvious motivation for someone to "infect" your food with HIV, particularly when HIV cannot even be transmitted by ingesting blood, saliva, or any other bodily fluids.