Have pottery fired once painted with acrylic is there a spray of something to make it food safe?

I am told that home made pottery should not be used for food no matter what you do to it. Google.com has 458,000 links for "pottery unsafe for food". Some of those links tell you how to make your pottery safe, and you should study them carefully since you are betting your life.

www.google.com/search?q=pottery+unsafe+for+food