1. Tray tables
By reviewing the evidence gathered by various analysis we can conclude that plane tray tables are the dirtiest spots inside a plane cabin by a good margin. A 2007 study found that four out of six tray tables contained MRSA and nano viruses.
More recently, Travelmath’s research found 2,155 colony-forming-units of bacteria per square inch. That really is a lot. But what is the reason behind such high numbers?
Well, plane tray tables are made from a textured and porous plastic to prevent your food and beverages from falling. Bacteria love plastic and that specific type of plastic allows them to grow even more. Not to mention that most airlines only wash them about once per day.
To make matters worse, the food crumbs and drops of soda that fall on the tray tables make it an even more appetizing place for bacteria. Next time you are on a plane don’t put your chips or peanuts directly on the table.