Shower odor trap (siphon)

The shower from my new home didn't have any siphon, U-Bend or anything. That was causing bad smells in the bathroom. Existing models on Thingiverse either caused water jams (too low water flow) or weren't really applicable in my specific case. I made my own model that was tailor made for my specific shower so might not be that useful for most, bou may still edit the FreeCAD source to adapt it to your specific case.