I’ve got a trick that I’ve used and it works for me everytime.
First, get a glass of water and heat it up in the microwave. Put a bunch of salt inside the water, like 3 spoon fulls. Then, down the water, make sure you drink all of it, all the salty crap on the bottom two. The salt will go in the back of your throat and helps the pain/soreness go down.
Next, take a second glass of water and put the same amount of salt in it. Next, take your weed and put it in the glass of water. Let the weed soak in that shit for a good 5 to 10 minutes. Next, take your weed and put it in the microwave for a couple minutes to dry it out. The salt in the weed helps when you inhale the weed, the smoke is essentially carrying all the salt particles and attaches to the saliva on the back of your throat, thus causing the soreness to go down.
Next, get a lemon or a lime and cut that in 4ths. Put aside one piece of the lemon/lime. Next, make a small line of salt and then squirt a tiny bit of that lime/lemon on the line of salt. Snort the line. It burns a little bit, but trust me, the drips you get will go straight to the back of your throat and the soreness will go away immediately. Works like a charm.