What is the fear of microwaves called?
Radiophobia is the fear of ionizing radiation, and is most
commonly portrayed as a fear of X-Ray devices, but it can also
apply to other devices that produce radiation (such as a microwave
oven) .
Cyberphobia is the fear of technology such as computers, and
computer controlled devices (such as a microwave oven).
Beyond that, there isn't a specific, named phobia, that
describes only the fear microwaves and substances that have been
microwaved.