The clock ticks relentlessly as you clutch a tissue, the dry, hacking cough echoing through the quiet of your home office. Your presentation starts in 10 minutes, your voice is hoarse, and the cough—unrelenting—threatens to derail your momentum. You’ve tried the usual: sipping warm tea, downing over-the-counter syrups, even that half-empty bottle of honey-ginger concoction […]