See also: How Long Does A Cough Last?
The most common feature of Covid-19 and the recent wave of cold/flu this fall is “reactive airways,” which is like a temporary cough-variant asthma with inflammation in the lungs. The most typical symptom is “coughing fits,” especially at night.
This can easily be treated with inhalers (“puffers”) which need to be taken with an aerochamber. I usually prescribe Ventolin and Flovent morning and night with Ventolin every 4 hours as needed.
This usually makes a big difference for sleep quality and shorter duration of cough than without.