If you're wondering how to remove cigarette smell from room instantly, there are several effective methods. First, open windows and doors to allow fresh air to circulate. Use an air purifier to filter out smoke particles. Sprinkling baking soda on carpets and upholstery can absorb odors; leave it for a few hours before vacuuming. Additionally, boiling vinegar or simmering citrus peels on the stove can neutralize the smell, leaving your space fresh and inviting.