K&N reusable cabin air filter question

Wasn’t sure where to post this but figured here was a safe bet.

anyway just order aFE pro dry air filter and a k&N reusable cabin air filter. My question is does the cabin air filter really need to be oiled? I was reading on Amazon reviews that some clowns were piling them, I found that odd for a cabin air filter but what do I know, I like it dry I guess

 

I didn’t oil the cabin filter, it has a very distinct smell that I didn’t want to smell every time I turned on the HVAC

 

Patchouli oil?

 

Works for me, dry it’ll be

 

Not oiled. Here's the 'refresher' stuff they sell in the cleaning kit that they have you spray on it. I don't recognize the chemical... antimicrobial perhaps?

https://www.knfilters.com/msds/99-0660.pdf