Just for perspective: I am a man in my mid-40s and for as long as i can remember i had this question… is it normal that i can shut my nose close just with some muscles?
I always wondered why some people hold their nose shut with their fingers while jumping into a pool or when exposed to some horrible smell… i never had this need. Changing my sons diapers? No problem! Cleaning the latrines while in the army? Just a breeze!
Ehm… yeah… just thought about this…


I can’t do that. I never felt the need to hold my nose in any of the scenarios you described. I am pretty sure when it comes to your nasal cavities there are no muscles involved.
Try blowing out a candle. Feel how your nose feels while doing that. Try to replicate the same movement in your nose without blowing.
There’s a ton of face muscles that you can learn to control with a bit of practice:
Probably a few more that I didn’t think of right now.
Blowing out candles is controlling your nasopharynx which every does so food and liquids don’t go up their nose while swallowing. Most everyone can breathe through their mouth instead of their nose.
The OP seems to be describing his nasal passage, not his throat. That seems unusual but I’ve never asked people to know.
At least not in my case. If I blow out a candle, my nose passage closes.
Maybe try the following:
It’s not the bottom end of the nose, but the top end of it. It’s certainly not the laryinx, at least not for me.
I think some of those are genetic.
Might be, but all of these are things I was not able to do at some point and that I conciously learned. So while having the “wrong” genetics might preclude you from doing them, you still need to learn these things if you have the “right” genetics.