Chances are it's a manufacturing fault similar to glass found in jarred foods, which happens on occasion, if it's even verifiably a real, large-scale problem. If you're referring to the whole "the jab will make spoons stick to your body" conspiracy, that one is straight-up stupid just on the basis of how magnetism works, as explained by Electroboom, my favourite mad scientist.
If your blood was full of magnetised particles capable of strongly attracting large, metal objects through the skin, you would die instantaneously. It's not a thing. Not sure if you are, just figured I may as well address the latest crackpot conspiracy just in case.