About 2 months ago I brewed an oatmeal stout (partial mash) and a cherry wheat (extract), using S-04 for both. When I bottled my oatmeal stout after 3 weeks in primary, it tasted great with a nice bit of sweetness and good mouthfeel. However, after 2 weeks in the bottles the beer had a very strange overpowering rubber/plastic type of smell and taste. The cherry wheat, also in primary for 3 weeks before bottling, has a similar aroma/taste but not quite as potent. I don't know if this was caused by the yeast (I have heard some complain about S-04) or something that I did. The only thing in common with the two batches is the yeast strain. The smell and flavor is too strong for me to even enjoy the beers. My ferm temps were consistent and never higher than about 68 deg. Is there any chance of autolysis in such a short amount of time? Any input would be greatly appreciated.