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If this doesn't bring improvements, I'll then try nasal drops (Gambit62 - who had similar problems - recently wrote in a post that she didn't start to improve until she started using the nose drops)

Cigarette smoking, a primary cause of emphysema and COPD, causes oxidative stress within the lung

(71) demonstrated that osteocalcin plays a crucial role in promoting postnatal neurogenesis and enhancing memory, while also exerting anxiolytic and antidepressant effects

Improving the work capacity at a high intensity

If symptoms persist beyond a few hours or feel unusually intense, contact your healthcare provider promptly to rule out complications