Smooth model curves

Hi there,

This might be more of a 3D modelling question, but since I want to use the asset in my game, I’m still going to ask. I found this CAD model of a toilet that I’d really like to use. But no matter how I convert and import it, I can’t get rid of the individual facets of the curvature.

Does anyone know how to help me or could point me in the right direction? I’m fairly new to 3D modelling and UE4, but I’m eager to learn:) Cheers

If anyone is interested: I smoothed out the model with a CAD-Tool (e.g. AutoCAD) but it never got to a point, where I wanted to use the model in my game…