How to keep Niagara unaffected by post-processing effects？

Development Rendering
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1

Hi, I‘ve alreadly made an outline postprocessing effect, and smoke based on niagara particles，I want the smoke remain unchanged under this postprocess……please help me!

9e83da9ee87700de3a8dbd95fe51fcb
9e83da9ee87700de3a8dbd95fe51fcb840×445 55.2 KB

this is my outline postprocess
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4d86015dc32a364110e91f13ac4eed5765×493 241 KB

this is the niagara i want to keep
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e1dd953c576f8d10aede6c082406f091920×1315 142 KB

this is the final look i want

plz help me!!!！！！

2

If its translucent object， You can try setting this option， set this setting “translucent Pass ->Before DOF to After DOF” which in object/particle material detail panel。
Of course, if it is a regular object, you can choose the custom depth feature to cull in the postprocess material。

3

in Your Material that using in Niagara Emitter, find Allow Custom Depth Writes and turn on
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