I’ve heard about that. In a sense it’s sort of both since it can really mess someone up if they aren’t aware of the magnet. Someone told me awhile ago they can now do more than shut off the pacemaker and can even adjust the settings with specific magnets to reduce the need for invasive procedures. Not sure what the extent of that is but pretty neat if true!
You can get headaches, anxiety, and a variety of other undesirable effects. Some of us would also lose our jobs if we consumed this so whoever did this is a dickwad.