Well, our earth's magnetosphere that protects us has been weakening. And yes, we are being exposed to more radiation. Hence, doctors are saying that some folks and animals (like the dogs you depicted in the photo) may be more susceptible to skin cancer. In fact, our neighbor's dog (a bull dog) has melanoma for which he has been receiving chemo and radiation therapy.
Wearing a piece of aluminum over our head might protect us from the UV rays that are emanating from these solar flares, but will not protect us from all the other radiation emanating from these M and X-class flares. And staying indoors will not help either, unless one stays in a bomb shelter with a lot of lead.
Living in a bunker would not be an option as one does need Vitamin D.
Oh, by the way, have you heard of that new reality show which offers the reward of a bunker for the winner?