Absolute Permissions Details??? (Facebook app maybe)

A

AC Question

I've gone through all of my apps and have denied permissions to my Note 4's microphone.

Today I went and visited my dad in the hospital and had a discussion with the doctor about Tylenol.

I get back to my office and low and behold, on my Facebook feed is a sponsored ad for Tylenol.

Something was listening in. I refuse to accept that it was a coincidence.

I downloaded Permission Explorer app and it shows that Facebook has permission to my microphone to record audio. But in my settings I have no permissions allowed to it.

Anyone know what's going on? Or any suggestions on how to really block it?

Thanks.