Chewing a cigarette is a bad idea as nicotine is a potent poison when orally ingested. Putting saliva on an open wound is not a good idea, either, as it can lead to infection.
Here is appropriate advice for hornet stings that has is based on effectiveness (science/reality) and is unlikely to cause harm:
First Aid
For emergencies (severe reactions):
- Check the person's airway and breathing. If necessary, call 911 and begin rescue breathing and CPR.
- Reassure the person. Try to keep him or her calm.
- Remove nearby rings and constricting items because the affected area may swell.
- Use the person's Epi-pen or other emergency kit, if they have one. (Some people who have serious insect reactions carry it with them.)
- If appropriate, treat the person for signs of shock. Remain with the person until medical help arrives.
General steps for most bites and stings:
- Remove the stinger if still present by scraping the back of a credit card or other straight-edged object across the stinger. Do not use tweezers -- these may squeeze the venom sac and increase the amount of venom released.
- Wash the site thoroughly with soap and water.
- Place ice (wrapped in a washcloth) on the site of the sting for 10 minutes and then off for 10 minutes. Repeat this process.
- If necessary, take an antihistamine or apply creams that reduce itching.
- Over the next several days, watch for signs of infection (such as increasing redness, swelling, or pain).
http://www.nlm.nih.gov/medlineplus/e...cle/000033.htm