Microbiologists were sent to collect 26 samples from four flights and five different airports to find out the dirtiest spots, Indy 100 reports
They then analysed the number of colony-forming units (CFUs) per square inch. Colony forming units are individual colonies or communities of bacteria, yeast or mould.
The tray table was the dirtiest of them all, containing 2,155 CFU’s per square inch.
Next, was the air vent, with 285 CFUs per square inch.
Not surprisingly, the toilet flush button reported 265 CFUs per square inch.
The seatbelt buckle results came back with a result of 230 CFUs per square inch.
This article originally appeared on Better Homes and Gardens.