Hello and welcome to hcm forum,
Thanks for posting your query.
Putting smoke inside the ear may have relieved toothache for a while.
I would advice you to visit your dentist
to get permanent relief for the toothache.
Please do not go for such quacks.
Cause of toothache has to be ruled out and treated.
Take complete course of antibiotics-analgesics too.
Please do not take medicines without medical supervision.
Maintain oral hygiene
Get dental check-up in every 6 months too.