These Are the 5 Parts of the Airplane to Avoid, According to Experts

The second dirtiest item is typically the overhead air vent, which is constantly being exposed to the hands of travelers. The next time you fly, notice how many times you adjust the vent throughout the flight. Lindsey Bristol, registered dietitian and nutritionist at Swanson Health, advises travelers that if you need to adjust the vent, be sure to wipe it down before and after use.