Spilled Milk

[aerogt01]

The solution-- Go to the pet store and get a product called "Natures Miracle". Pour it on and let it do it's thing. It may take a few treatments depending on how bad the smell is. Don't be afraid to use this stuff. Soak the area good. (test a hidden area first for colorfastness if you like). It works by breaking down the enzymes in the milk, something that shampoos and detergents don't do. After the smell is gone wash and shampoo as normal.
Hope this helps.

1oldsalt is correct. There is no need to remove the carpeting and padding and instead use an enzyme (and bacteria for amped up cleaning) based cleaning solution found at pet stores to digest the milk proteins. A few treatments of this will remove the smell.

FWIW, I have found a much better Enzyme cleaner than Nature's Miracle. It is called Bac-Out and it is made by Biokleen. I use it on my son's cloth diapers and all the pet spots that Nature's Miracle won't touch.

[AeroCleanse]

Steam works well if you have a steam machine (not to be confused with an extractor). I have also found that using a Tornador works great as well.

[1oldsalt]

Thanks for the tip aerogt01. I'll put that one in my back pocket for when I need it.

[robert2008]

If you love going for car rides or rely on your car to go everywhere, a stinky car is not something you would like. It’s not a secret that car smells can be pretty bad. And some are more persistent- like spoiled milk odor.