odor

Hello, I am fitting a new bathroom, and changing the layout. I've fitted one bathroom before, but I did have issues with smells occasionally, that makes me think I might be fitting the waste system wrong. Does anyone with experience know, does the below look okay? I've read on some places...

My water stinks. Smells musty. I installed a Whirlpool water softener mid February of this year ('23) and it's smelled ever since. So here's the story: we live on a farm in southeast PA. Our well is 60' deep with the water table around 10'. Two houses supplied from the same well. One day I...