Realness of stink in foot smelling porn out there

Hi. In our community not everyone got a chance to experience in real life so some of us are stick to internet videos. I probably been through all videos on c4s or all the free sites but I see that some videos are fake. I mean the socks are clean and disgust of smeller is staged, but I’m not looking for that if my kink is real woman feet stink.
I know that’s hard because you can’t smell through internet but so many years in the game and observations made me very aware of how real stinky feet could look like.

I know that some studios has to do it with passion and they def telling their models to come with stinky feet because the owners got the fetish itself and want to do the real thing but question is:

How do you distinguish real from fake and could you recommend some studios with confirmed realness of stinky feet in foot smelling videos?