Toothache inhale cool air will not hurt need to check the state of the pulp, common in acute pulpitis there is suppuration or partial necrosis, need to carry out root canal treatment. When pulpitis occurs in a tooth, it will produce severe pain to external hot and cold stimuli. When the inflammation further develops and suppuration or partial pulp necrosis occurs, severe pain can occur with hot stimuli, and cold stimuli can temporarily relieve the pain, and the patient will have temporary pain cessation when rinsing with cool water, including inhalation of cool air. After examination and diagnosis, root canal treatment is needed to remove the infected pulp and fill the canal after the inflammation is eliminated. It is recommended to go to the hospital in time to check the oral specifics of the symptoms of toothache, to avoid aggravation of the symptoms affecting work and life.