How do you stop the pain from a hornet sting?

You can put meat tenderizer on it, which neutralizes the venom in insect stings. Use the kind of meat tenderizer that contains papaya extract, an enzyme that breaks down proteins such as those in the venom of stinging insects. You can make a paste with a little water and apply it on the area of the sting, and it will work well to control the reaction. But first, if the sting is a bee sting and the stinger is still attached, use a credit card to scrape and flick the stinger up and off the site working from the bottom by the skin. Do not pinch with tweezers to remove it, or you can further squeeze the venom that is still in the stinger into the wound.