Yeah I don't know shit about fuck but I'm not immediately concerned by the idea. Most bacteria we come in contact with is somewhere between completely benign and outright beneficial. Our bodies are really good at dealing with random bacteria.

Not everything can be washed though. Pre-processed foods for example. I try to get mine as ‘natural’ as possible I.e. still whole, but it’s not always feasible because someone else might provide pre-cut fruit/veggies