I consume some fruit from a Chinatown street vendor and immediately experienced attacks to the back, feet and head. I did not experience the same attacks after drinking the rain water.

The ethereal devices were not present in the area I consume both items.

This is very important as it tells me that, first, the water is not a contaminating factor and the uncooked food is a matter of concern.

If I had not consume the food, I would have been better off. I can almost ensure that that the attacks is associated with these devices being placed in the food, water and surrounding area.