During the first World War studies were conducted to help aid victims of deadly gas attacks. These victims were treated with basic saline solutions leading to the study of Liquid Ventilation.
On a side note this Liquid Ventilation technique was going to be used to escape crashed submarines.
Well, as the science behind it has progressed more and more since the first World War we see the Liquid Ventilation being used to treat those with damaged lungs
As well as this technique there is another use for Liquid Ventilation ans that is the exploration of the deep sea.
Unfortunately this may not be apart of your daily life and maybe not even your future. But this topic is important if you go into the field of marine biology as depicted in the popular Sci-Fi movie "The Abyss" or if you intend on being a pulmonologist.
But who knows maybe you'll be the next person to use the technique of Liquid Ventilation