If you have a rotten smell in your home, there are a few things you can do to neutralize it. First, try to identify the source of the smell. If it is coming from the garbage disposal, run it with hot water and dish soap. If the smell is coming from the sink drain, pour a cup of baking soda down the drain followed by a cup of vinegar. Let this sit for an hour, then flush with hot water. If the smell is coming from drains throughout your home, you may need to call a plumber to clear out your pipes.
If the rotten smell is coming from food in your refrigerator or pantry, throw away any spoiled food. Wipe down all surfaces with white vinegar or lemon juice to kill any bacteria that may be causing the odor. If the smell persists, place an open container of baking soda in the affected area until the odor is gone.