The fermented feed for meat birds thread has had posts from folks who used glass containers which were closed too much and had exploded. he FF should smell like sourdoughI wasn't going to say anything because I know people FF in plastic buckets made into strainer inside other plastic buckets and seem to do fine but I just wanted to give you a heads up...
I only know from a baking stand point with sourdough starter (which from what little I've read about FF, seems to be about the same concept) that you should never put starter in a plastic container. When doing sourdough starter I always had to use glass or ceramic containers, I used a plastic container once, the starter went bad. I've read about people doing FF and not knowing what they did wrong but it going bad on them and I wonder if it might be the container they use?
Just wanted to give you a heads up, if you notice a funny smell or the FF seems 'off', don't give up on it and maybe try a glass container. I know Hobby Lobby sell oversized Mason Jars (look online for a 40% of coupon), I think I've seen gallon size Mason Jars at Target too. You could poke holes in the top for ventilation...only if the pitchers don't work!