quilter
War hero
Captain Obvious solution: Before and after unpacking etc WASH your hands, again prior to opening anything. Works for me.You must be terrified at what happens to cans, boxes, etc. when they are stacked outside on big pallets. And fresh fruit and veg as it grows on trees and bushes. All those birds could sh!t on it. Dirty rain could fall on it.
At some point you have to decide to wash everything, wipe everything with Dettol wipes or accept that we do not live in a sterile world.