Microwaves....

Sunlight is solar radiation. So is the energy that the earth radiates back into space at a different wavelength. Damage depends on wavelength and exposure. Obviously some radiation is more damaging than others.

It’s a misconception that radiation is dangerous. The only type of dangerous radiation is ionizing radiation, which is the type you’ll find after a nuclear explosion.

The burrito does not sustain the radiation emission because....it's a burrito not a magneto...

Look up microwave sickness

You're thinking of radioactivity. Light is radiation. Radio is radiation. X-rays are radiation Etc.

Well, your stove also uses a form of radiation to heat your food as well.
Light from your lightbulb is radiation , heat from a flame is radiation.
Radiation takes all types of forms but most people only assume it all to be of the nuclear decay type.