Allow the area to thoroughly dry, which may take a day or so in a damp basement. Then, pour some Nok Out into a spray bottle, and spray the area generously. The lingering sewer smell should be permanently neutralized by the next day or about 8-12 hours. It's important to note that the smell isn't immediately gone.,
Baking soda and vinegar Start by pouring ¼ cup of baking soda down the drain, and then leave it for about 10 minutes. Then, follow it with one cup of vinegar. Let the mixture fizzle and work for a few minutes, and then finish by turning on the water and running the disposal to clear out any leftover food waste.
Pour Some Bleach in It: Bleach, like other disinfectants, kills almost every species of odor-causing bacteria commonly found in drains and sewer lines. So, an easy DIY step you can take to reduce drain odor is to use bleach. To use bleach to clean your drain, fill the sink with hot water, and add a cup of bleach.5 days ago