Put on disposable gloves
Remove any solid vomit with paper towels or a plastic scraper
Blot up excess liquid with clean paper towels
Mix warm water with a small amount of mild dish soap
Apply the solution to the stained area
Blot the area gently with a clean cloth
Repeat blotting until the stain lifts
Rinse the area with a cloth dampened with clean water
Blot dry with paper towels or a dry towel
Sprinkle baking soda over the area to help absorb odor
Let the baking soda sit for several hours
Vacuum up the baking soda completely
Use an enzymatic carpet cleaner if odor remains
Allow the carpet to air dry fully
Avoid scrubbing, which can spread the stain and damage carpet fibers