Hi. Started getting some nasty smells in the bathroom. I think they're coming from the toilet plumbing. Does this look right? At first I thought that the flexible connector/pipe had come loose from the hard grey soil pipe it joins on to. I thought that I had to jam it on to provide a tight friction join. But I can't do it, and it doesn't really look like that it's possible. On the other hand, surely smells would escape from a join that was not airtight. What do you think?