From Daily Mail (caution: tabloid):
Residents in New Jersey and the wider tri-state area claim they have become mysteriously ill after seeing drones in the sky.
After witnessing or reading about the devices, residents revealed how they started coughing, suffering from a blocked or runny nose or experienced puffy, watery eyes. One woman in New Jersey said she became so sick it felt like she was ‘coughing up my lung’, while a second in New York City said her blocked sinuses must be because of the drones over Staten Island.