I came out of a shower and almost ran into a moving fan as I was wiping my face. I didn't feel any collision (maybe a slight brush, but I don't know for sure). I'm not bleeding and it doesn't hurt. The openings don't look big enough for it to fit through. How do I convince myself for certain that nothing happened?

I'm really worried.

how do I know for sure my penis didn't touch a spinning fan

Seriously, It would hurt like hell and you would KNOW about it.

Seriously? Or are you yanking our chain?

It would be OBVIOUS if your penis "touch"ed by a spinning fan.