Toilet sign on airplane
Avoid Using A Plane's Bathroom Without This One Item
The technologies behind a plane's design make the airflow sufficient to allow passengers to breathe freely. However, the restrooms are cramped, and you'll want to bring a mask.
In the plane's restrooms, "There is no window and the air ventilation is poor," an anonymous former flight attendant explained. Therefore, particles of human waste linger.
To ease your mind while using the bathroom on a flight, the former attendant recommends bringing as few personal items into the bathroom as possible and putting on a mask.
The Mayo Clinic states that tight-fitting, multi-layered cloth masks made of cotton or professional masks like N95 and KN95 offer solid protection against airborne germs.