Water leaking through the ceiling below the shower. Removed the shower grate and noticed the shower drain to be broken. Removed and replaced the shower drain. Ensured that the drain was properly seal. Turned on the water for testing. No further leaks detected with the shower. Sewer flies coming from the bathtub drain. Ran water to prime the p-trap. **there is a p-trap (U shaped drain pipe) below the tub that holds a certain amount of water to keep the smell of the sewer from coming into the home. If it is not used over time, the water will evaporate and cause smells of insects to crawl into the home. Checked the water pressure to the home and got a reading of 70psi. An ideal range for for your water pressure is between 50-80psi.