You may feel some burning (it may also manifest as stinging or general irritation) in your mouth when using Listerine. This is due to the high alcohol content in the mouthwash.
This high alcohol content is needed for killing bacteria, but it can heighten the sensitivity of the mouth and throat’s heat receptors, triggering a feeling of burning or stinging.
If you are sensitive to the intense taste of Listerine, there are milder formulations available.