Should this be a problem?

Guys, need your advise here:

I was taking pics yesterday when I noticed what seems to be a small hair (as if it would be 0.5mm long, or even shorter, but I can't be sure) whenever I watched trough the optical visor of the camera.

Changed lenses, and still was there.

Throwed some clean air inside the body, and nothing happened.

I doesn't affect the photos, as far as I am concerned.

And, finally, can't be seen with the live view in the LCD screen.

a) Any clues where could be placed?

b) Worth removing it?

c) Way to remove it?

Thanks in advance.

PS: Was about to add some PS, but I guessed someone would have left someone wondering about it.

It you are not seeing anything on you images, it's probably in the viewfinder and shouldn't cause any problems. I have a couple of small spots in my viewfinder that have been there for a while. Since they're not on the sensor, I don't worry about it.

sometimes,, its an stray eyelash ? or eye brow hair (laughs,, ok,, as you get older, eye brow hairs can dangle....). is it on the mirror perhaps?

It might be on the mirror or stuck underneath the focusing screen. Might be worth it to find and get rid of it before it gets on your sensor.