How to filter a node view on a paragraph field
Adding Relationships often causes duplicate rows in the results. 

You can "remove" the duplicates using the Aggregation in Views (enable it under Advanced). 

Then adjust the Aggregation settings for some Fields, specifically the Group column option. You may need to change it from Value to Entity ID or vice versa. The exact combination of settings depends on your particular case, I haven't tried it with Paragraphs. 

When duplicates are introduced through Taxonomy reference field that is using a Relationship then all those Taxonomy fields need to have the Entity ID and not the Value. 

If the field is a direct Entity Reference field and isn't using a Relatinship then again it needs to be Entity ID instead of, in this case, target_id. 

Be careful with Sort criteria when using Aggregation, some of them can mess up the Aggregation. It's best to remove all Sort criteria while adjusting the Aggreation, then when you have it working add them and test that everything is still working as expected. 

Some modules offer more advanced Aggregation settings, try looking into that if you need to, for example: Views Aggregator Plus,