The gas exhaled inside the nose is hot, mainly consider two situations: the first, the nasal cavity is infected by bacteria, often due to the pain caused by digging nostrils, plucking nasal hair, will be particularly obvious, the formation of boils in the nasal cavity will also lead to the appearance of hot gas out of the nose. In terms of treatment, you can use Bactrim ointment or erythromycin ointment applied to the inside of the nasal cavity, which can effectively play a role in anti-inflammatory and reduce swelling. The second, consider itself to have rhinitis, nasal cavity often have a large amount of nasal adhesion, a long time will have anaerobic bacterial infection, so it will lead to nasal mucosa congestion, will feel out of the air is hot. In terms of treatment, you can buy tinidazole gel or metronidazole gel to apply inside the nasal cavity, which can effectively play the role of anti-anaerobic bacteria.