I have had rhinitis, and now I often have a stuffy nose, poor breathing and no smell. It is better when it is hot, but not when it is cold. How to maintain this?

This symptom should be allergic rhinitis.

I recommend a medicine for you.

Oral "Kairuitan", 1 tablet/day

"Renocott" nasal spray for external use, 1-2 times a day.

Usually pay attention to add and subtract clothes in time with the weather changes to avoid catching a cold.