Put your hand before your face when you cough or sneeze.
Rinse out the nose with hot, weak salt water at night and especially if you have been inhaling dust.
Brush the teeth after each meal and before going to bed.
Do not pick the nose with the finger nails; it makes sore spots in which germs grow.
On dusty hikes tie a handkerchief across the nose and mouth.
Never sweep the floor with a dry broom. Use a damp mop and so pick the germs up and carry them out instead of driving them up in the air as dust.
Diseases Caught by Swallowing the Germs
[1456]. The more common diseases. The following are some of the more common diseases caught by swallowing the germs: Typhoid fever, dysentery, cholera, and ptomaine poisoning.
[1457]. Water as a distributer of disease. Impure water is one of the most common distributers of disease that there is. Therefore, water from sources unknown or soiled by sewage, should be avoided as deadly and should not be used, unless boiled, for drinking, brushing the teeth or rinsing mess kits.
You can not always tell polluted water by its appearance, smell or taste. Unless from a sewer or drain, it may look clear and sparkling, with no smell and have a pleasant taste, so, water that is not known to be pure should not be drunk.