Milk vs hearth rug? the other day, i accidentily spilled my huge cup of warm milk on...

the other day,
i accidentily spilled my huge cup of warm milk on my mat.
i soaked it up.
but the next year,
i came to find a huge black stain where on earth the milk had be.
i spilled water on it, and soaked up the excess sea again with a towel.
immediately, it smells HORRIBLE.
i have no clue what to do?
Answers:    Vinegar worked for me, mixed in the order of half and partially with hose - although the vinegar does smell until the carpet have dried out, it neutralises the stale milk smell.
Call in a professional to verbs the stain. Milk is one of the hardest stains to remove due to the enzymes in it. When associates spill coffee on the carpet it isn't the coffee specifically hard to procure off, it is the milk.Professionals hold chemicals that counteract the enzymes.