compost, 
Oops, I have let my main compost pile go anaerobic. Even after 10 years of experience, mistakes can still happen.
We had a lot of rain lately and despite the tarp on top of the pile, the humidity was too important. Also, the levels of browns were too low.
So I had to adjust the pile and balance it to fix it.
This video is still relevant and will tell you how to fix your pile if it goes anaerobic.