Physics be damned I'm going to nosefrida myself

Underclocking. That's how you edit BioS.

Also burns if you forget the saline packet

Get some surgical tubing.

One end up the nose, the other in your mouth. Don't forget to spit before you have to swallow.

when you go to the dentist, the dentist and/or hygenist will usually work with two tools. If they need to rinse your teeth, they'll first blast them with some ice cold water, and then they'll stick a straw-looking thing in your mouth to suck up the water they just skeeted in. Similarly, when they're drilling your teeth, they'll use the little straw fellow to suck up the tooth dust so you don't get weird shit in your lungs.

It's like an oral shop vac, where your mouth is the mess. They use them so they don't have to stop and let you spit. OP has Problems™ and wants to stick one of these things in their nose.

OP, please, just blow your nose or take a decongestant if you're sick (NOT oral phenylephrine because that shit is useless). If you avoid blowing your nose because you get bloody noses all the time you can actually get that part of the inside of your nose cauterized. I used to get at least one nosebleed a day, and it was genuinely life changing for child me when the doctor stuck that swab in my nose. It was painful for a sec or two, but I only get nosebleeds once or twice a year now.

EDIT: netti pots are good, just make sure you practice good hygiene with those. Very hot and steamy showers and putting damp heat on your sinuses is also quite helpful in my experience as a lifelong severe allergy sufferer.

I just asked copilot. The salt water has a couple of benefits over pure water; it's less irritating to mucous membranes, it thins mucus more effectively, and it has modest antimicrobial effects.

I use the neilmed sinus rinse almost every day and it has been life-changing. Last time I got sick there was no stuffy nose or runny anything because I just cleaned it all out it was phenomenal.

Pure water would be bad, but salt somehow works, just like going to the beach (even if you are thousands of miles away:-D).