A DoorDash worker who was caught on a doorbell cam spraying a mystery substance on a delivery order bizarrely claimed she was only aiming at a spider. Kourtney Stevenson is seen on the Dec. 7 footage delivering Arby's to the doorstep of an Indiana home, taking a confirmation picture -- then calmly spraying an aerosol substance onto the bag. But the blue-haired Kentucky native said she was trying to scare away a spider when she was tracked down by cops, according to Fox News. Mandy and Mark Cardin had complained that after they ate the food, they vomited and suffered from a burning sensation in their throats and mouths, according to cops.