Why you should never turn off the air vent on flights: Health risks, comfort hacks, and expert study insights

Experts suggest keeping airplane air vents on to maintain air quality and reduce health risks. Studies show that proper ventilation helps circulate air, remove germs, and regulate temperature, leading to less stress and discomfort. Adjusting the vent’s direction and flow, along with using layers and staying hydrated, balances comfort and safety during flights.