If your nostrils itch on the inside, it’s hard to breathe and you pull out epic size boogers, the reason is most probably low humidity.
That is due to nasty freezing cold weather you have most part of the year, and air conditioning in those rare heat waves. Linseed oil will help, baby oil will do perfectly. Put a drop of it on your fingertip and evenly lubricate the inside of your nose. If it’s a vaporisator, spray a little oil inside your nostrils pointing the nozzle towards the tip of your nose. Repeat this twice a day, and in a couple of weeks the uncomfortable sensations should be gone.