Onion is exceptionally strong antibiotic and and antiseptic food. It was used to treat infections.Chewing raw onion for three minutes is sufficient to kill all the germs in the mouth. Placing a small onion on the bad tooth or gum often allays toothache.
Onion can help prevent cholera infection during epidemic. It should be cut in to pieces and scattered all over the house during cholera epidemic. This will prevent attack of diseases.
The juice extracted from an onion can be used to treat pus formation in the ear caused by middle ear infection.It should be slightlywarm and put into ear two or three times daily.