Reconnect and Seal Pipe

What happens here

With the disconnected pipe exposed, apply PVC cement (or appropriate adhesive for the pipe material) to both the outside of the male end and the inside of the female end of the pipe connection. Firmly push the pipe sections together, twisting slightly to ensure even distribution of the cement and a secure bond. Hold the connection in place for a few seconds to allow the cement to set. This will re-establish the seal in the vent system, preventing further sewer gas leaks. The video shows this being done to a 90-degree PVC elbow.

Goal: Permanently fix the disconnected vent pipe to stop the leak.