Baking soda is known for its ability to absorb and neutralize odors. The time it takes for baking soda to absorb smells can vary depending on factors such as the size of the area, the strength of the odor, and the concentration of baking soda used. In general, it can take anywhere from a few hours to several days for baking soda to fully absorb and eliminate odors.
For smaller enclosed spaces like a refrigerator or a closet, placing an open container of baking soda inside can help eliminate odors within a few hours to a day. However, for larger spaces or persistent odors, it may take several days of continuous exposure to baking soda for noticeable improvement.
Keep in mind that baking soda is not an instant solution, and its effectiveness can be influenced by the factors mentioned above. For stronger and more stubborn odors, it might be necessary to repeat the process multiple times or consider alternative odor-eliminating methods.