Eliminate the smell of sour milk by treating the affected area with white vinegar. Wash the affected area with warm water and soap, then pour white vinegar directly onto the spot. Let the vinegar sit for 10 minutes, then blot dry.
- Clean the affected area to remove excess milk
Using warm water and a fabric-safe soap or detergent, scrub the affected area with a clean rag soaked in the soapy water. Scrape away excess milk crust with a plastic pot scraper or brush. Dab the area with a clean cloth to pick up excess water.
- Spray the affected area directly with white vinegar
Pour white vinegar into a clean plastic spray bottle. Spray the affected area with the white vinegar while it is still damp from having been washed with soap and water. Spray enough vinegar so that the area is visibly wet. Allow the vinegar to sit for a minimum of 10 minutes.
- Dab the vinegar-treated area with a clean, dry cloth
Dab the vinegar treated area with a clean, dry cloth until the area is as dry as possible. If desired, use a steam cleaner to cleanse the affected area further. Allow the area to dry completely, then repeat the vinegar treatment process if desired. The vinegar scent disperses a few days after the vinegar dries.