Do not rub the stain as this will just make the liquid seep deeper into the mattress.
If you are worried about the liquid staining the sheets, you can run the spot under hot water with a few dabs of laundry detergent. Then, wash the sheets as normal.
Do not rub the mattress to remove the liquid, as this will just make the liquid absorb more into the mattress.
After the baking soda has been on the mattress for a few minutes, vacuum it up.
Make sure you cover all of the wet areas on the mattress with the cleaner. You can apply several layers of the cleaner to the mattress if the smell is strong.
You can try speeding up the drying process by using a hair dryer on a medium or high heat setting.
You may need to sleep somewhere else for the night if you were planning on sleeping on the mattress. Do not try to sleep on the mattress until it is completely dry.
Touch the mattress to confirm it is dry before you use it again. You can also smell the mattress to confirm the smell is gone.