It appears that a plane on approach to Toronto's Pearson Airport made an unscheduled drop off that has several families up in arms.

UPI reports that two Ontario families said they are convinced passing airlines dropped feces on their properties, but aviation authorities disagree.

The Sullivan family of Mississauga said their driveway and three cars were splattered with what appeared to be feces dropped from a plane Wednesday.

"It just covered the top of my mom's car, dripped down the side, splattered onto my car and back onto my dad's," Lindsay Sullivan said. "It smelt really bad," George Sullivan said. "It smelled like it was feces."

Sullivan and his wife, Liz Murray, told The Star they had parked their car minutes earlier and Sullivan was about to get into the family’s swimming pool with his 3½ -year-old granddaughter when he realized he had to turn on the water heater. That meant walking by the driveway and that’s when he saw the splatter all over the car. His daughter’s parked car was also hit.

"There's no way one bird could have done it, unless it was a pterodactyl," he said. "It came from an airplane."

Transport Canada noted in its investigation report that the splatter was "the width of one lane of highway."