When you realize you’ve forgotten deodorant, don’t panic! Try wiping down your underarms with a damp washcloth and water or witch hazel to remove any sweat or bacteria. If you have time, apply a thin layer of baking soda or cornstarch to absorb moisture. You can also use a deodorant wipe or antiperspirant spray from a friend or colleague. If all else fails, apply a light layer of lotion or body spray to help mask any odor.