A weakling would easily be killed, but a strong man is splendidly hardened and kept in perfect physical trim by sledging and tramping in this Germless air.
"My Attainment of the Pole"
Frederick A. Cook
He knew what it meant to be disabled two hundred miles from a hospital, with fifty miles of mountain trail between one's need and a roof, but Alice buoyed herself up with the belief that no bones were broken, and that in the clear air of the Germless world her wound would quickly heal.
"They of the High Trails"
Hamlin Garland
Although there is free communication between the atmosphere laden with germs and the Germless air in the flask, contact between the two takes place only in the tube; and as the germs cannot fall upwards, and there are no currents, they never reach the interior of the flask.
"Aphorisms and Reflections from the works of T. H. Huxley"
Thomas Henry Huxley