Definitely not the food tray: This is what you must disinfect immediately upon boarding the plane

Heading out for a summer vacation, and just before you settle into your seat, a troubling thought arises: how many bacteria are actually touching you here? If you wipe down the tray table and think you're done, you should keep reading: laboratory tests found that the headrest is actually the most contaminated surface on the plane, and it is exactly what most of us forget to disinfect.

And you are definitely not alone in your concern; searches for flight hygiene have skyrocketed by thousands of percent over the past year. As we already discovered in the five dirty habits you should stop on your next trip, the danger hides precisely in the places you don't think about.

Why the plane is full of bacteria even when it is clean

The problem is not that planes are neglected. On the contrary, they are cleaned frequently and under stricter procedures than most public spaces. According to Dr. Mario Hopfeld, a microbiologist and food safety expert who partnered with Icelandair, what is worrying is the speed at which bacteria travel in a closed and crowded space, when the same surfaces are touched by hundreds of hands. According to him, about 90% of passengers use the tray table and touch the air vent.

The data from the field is not reassuring. In a test conducted on dozens of contact surfaces on flights, it was found that more than half of them carried high enough levels of bacteria, yeast, or mold to pose a risk of infection, and the most contaminated surface was not the tray, but the headrest.

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What does this mean?

• Contact surfaces: The points that the most hands touch, such as the tray, the armrest, and the air vents.

• Cross-contamination: A situation where a bacterium moves from a surface to a hand, and from there to another object, food, or the face, and thus spreads further.

What to prepare in advance

Two small items that will make all the difference: alcohol-based hand sanitizer and disinfecting wipes. Keep them within reach and not in the overhead bin, so you can use them even before takeoff.

Step-by-step guide to a clean flight

Start even before boarding the plane. Do not wait for the seat. From the moment you entered the airport, you have already touched dozens of surfaces, from the trays at security to the check-in screens. Frequent hand disinfection already at the airport stage blocks the transmission chain early.

Don't forget the phone. Most of us are careful to disinfect our hands before eating, but forget that the device we hold all the time is loaded with bacteria. If you touch the phone and then food, all the disinfection is reset.

Disinfect the forgotten surfaces. Beyond the tray, the armrest, and the handles, there are points that are touched just as much and tend to be missed: the seatbelt buckle and the air vents above the head. These are high-contact frequency surfaces that almost no one cleans.

Prevent cross-contamination. Do not settle for wiping the seat, wipe your belongings too. As the expert explains, even if you disinfect every surface around you, it is enough to pick up the phone or the bag you dragged through the airport and then eat, to recreate the same contamination.

Pay attention to where you store items. The pocket on the back of the seat is convenient, but it is one of the least clean places on the plane, and into it passengers push used tissues and food wrappers. Dr. Hopfeld himself avoids putting anything there that he will need to touch again, "like the passport or the headphones." A study found that the passport is the most contaminated item you carry on a flight, so it is better to keep it in your personal bag.