This was the main reason I stopped using evod's and switched to an Aspire Nautilus Mini. No more gurgling and just a totally better
vaping experience. That was quite a while ago for me and I have since moved to rebuildable tanks (Kayfun) but the mini served me well for a long time.
Do yourself a favor and pick up a iStick 30W to go with the mini. You don't need all that power but it doesn't suffer the bad threads, sticking pin, and poor low power regulation that the iStick 20W does. The 30W will power most of the newer rebuildable tanks that are out today as well.