I had a batch of LME kit beer, that due to work, had to leave in the bucket for a month. When I got back, it had a white skim on the top, and a bit of an MDF smell to it. I hoped it would sort itself out in the bottles, so I primed it and bottled.....what a mistake! 2 weeks later I open one and it jettisoned almost the entire contents into the ceiling! Still had the press board taste, so I am figuring it was infected and it made it "super carbonate". Opened the rest of the bottles in the sink with a dish towel "scatter shield". Not sure if this helps, but ya, infection can make for a hairy situation.