Autolysis/Turpentine smell

[tgolanos]

My plan for today was to brew a kölsch since I had Wyeast kölsch yeast saved in my fridge. The brew process went great, but it's about a year or so since the yeast has been in the fridge. When I opened the jar to make the starter, I got the overwhelming smell of chemical turpentine. I'm not too concerned, I have fresh lager yeast I can use instead, which is my plan at this point. Would this be the smell of autolysis, though, or just infected yeast?

 

[Yooper]

Turpentine/solvent aroma is usually due to a wild yeast contamination, combined with a low oxygen environment.

Autolysis is very fecal- it quite literally smells like ****.