1. if you are stung by wasps or the like, Overcome by the following way:
press on the affected part of the sting out of it for venom. Then take the red onion, peeled, and split into two pieces. then rub on the affected part of the sting, the pain will soon disappear.
It is also useful to overcome the itch from mosquito bites.

2. onions are also beneficial to reduce fever, especially for children.
Peeled red onion, sliced into small and thin pieces, mixed with a little eucalyptus oil, then rubbed on the body and forehead.

just try, these tips have been applied for generations from the elders.