Subject: What are some bacteria in spoiled milk?

I am doing a project in my Environmental science class on occupational 
hazards.  I've decided to do it on the spoiled milk in the kindergarten 
classes where I work.  It's been 8 years and the milk in the carpets are 
getting to the point that the whole wing stinks like spoiled milk.  I've 
tried to find different searches to help me, but nothing talks about 
spoiled milk the way I need.  I know that the smell is from bacteria, but 
any other bacteria that may be associated with the milk being in the 
carpets for so long would be appreciated.

Re: What are some bacteria in spoiled milk?