It is very common to experience a lingering dry cough after COVID-19, as your airways can remain sensitive and inflamed. Since Ascoril+ has not fully cleared it, focus on staying well-hydrated with warm fluids, using throat lozenges, or inhaling steam to soothe irritation. Over-the-counter dry cough suppressants containing dextromethorphan can also help quiet the cough reflex. Please avoid cold air and irritants. If your cough persists beyond another week, worsens, or is accompanied by shortness of breath, consult a doctor. They can evaluate you and consider treatments like generic inhaled corticosteroids to help your airways heal.