[margalabargala]

Considering that it's possible to levitate a live frog with a (very strong) magnet without killing it, I'm able to believe that a sufficiently strong magnetic field can be detectable by a human without killing or immediately, obviously harming them.

[AlotOfReading]

This is an electrostatic field, which has no magnetic component in the classical model.

[HelloNurse]

And more practically is likely to be detected, when approaching it casually, by discharging it through the closest body part.