This process for getting rid of a sour milk smell takes less than a day to complete. It requires common household items, such as paper towels, a plastic knife, detergent, white vinegar and a hairdryer.
Get rid of the excess milk
Use paper towels to wipe off liquid milk. Scrape off crusted milk using a plastic knife.
Clean the area thoroughly
Use warm water and detergent to scrub the area. Wash affected fabrics properly.
Soak the affected area in white vinegar
Douse some vinegar on the affected area. Soak any affected fabrics and launder them again.
Dry the affected part completely
Use a hairdryer to speed up the drying process.