How can I see where a trigger or filter is being used?

Is it possible to see a list of where particular triggers or filters are being used? i.e. what smart campaigns.

We have been experiencing SPAM issues and want to exclude SPAM from qualifying for smart campaigns. I want to be able to see where the "Lead is created" trigger is being used, so I can add the SPAM filter I've set up to the smart list of those campaigns.

I know you can do this for fields, i.e. in Admin>Field Management you can look at Used By. You can also do it for individual assets i.e. emails and the Used By tab. Is there anywhere I can do this for specific triggers or filters?

Any tips greatly appreciated!

Jess