The mouthpiece and the airflow system are usually the first to show problems in cold weather. When you move a vape from a cold pocket into a warm room, condensation forms inside the mouthpiece. That moisture mixes with e-liquid and can clog the airflow, making the draw feel tight and gurgly. Sometimes you even get a tiny drop of liquid on your tongue—unpleasant but harmless. The fix is simple: don't use your vape immediately after a big temperature change. Let it sit for a few minutes, and give the mouthpiece a quick wipe with a tissue if you notice condensation.