How to stop mouth-breathing

Sadly, this device to stop mouth breathing won’t stop mouth-breathers.

HOW TO STOP MOUTH BREATHING!
You can make sure that you breathe through your nose during the day, but one-third of your time you are asleep.
The Davis Chin Supporter scops mouth breathing and thereby prevents snoring, also the various throat and ear troubles directly due to mouth breathing. It’s fine mesh canvas or linen fits like a glove and washes like a handkerchief. It will add to your good health and spirits. Measure size around crown of head and point of chin. By mail, postpaid, Cotton— $2.00, Linen—$3.00, Mesh—$4.00.
CORA M. DAVIS
Dept. P. C. 507 Fifth Avenue
NEW YORK

Ad originally from the March 1922 issue of Physical Culture magazine. Information taken from the post at the Modern Mechanix blog.

[tags]How to stop mouth breathing, No longer mouth breathing != no longer mouth breather[/tags]