The use of this small orifice can actually work to your advantage because this can help you avoid contact with certain microorganisms that can make you sick during a flight.
Travel + Leisure spoke to Dr. Mark Gendreau, an expert on the spread of infectious diseases associated with air travel. He said that aerial viruses like tuberculosis and measles are transmitted by tiny nuclei of droplets that can hang on for five hours.
It says that these droplets can not reach you if the air conditioning is activated because a barrier has been formed around you that prevents it.
“Aircraft ventilation has had a bad reputation, but it’s completely unfounded.”
“The way air flows in an airplane does not necessarily work in all cases. In fact, it is compartmentalized into different sections of the aircraft, ” Gendreau said.
“As a rule, the air you breathe and to which you are exposed is usually two to five rows around your seat,”he added. “For airborne viruses, it’s incredibly important to ventilate, because ventilation becomes your primary means of control in addition to isolating the affected person , “ Gendreau said.
By using the orifice and turning it on “medium” or “low”, you can create an invisible air barrier around you that creates turbulence, simultaneously blocking these particles and forcing them to the ground faster.