My brother bought a five pack of these today so he brought me one to try.Soon as I started filling it fluid went in the little bung hole and straight through the bottom!So I vaped what little juice I had left in it and liked the way they vaped really well.My brother had no leaking problems at all?So when I got the liquid I had put in vaped out ry4 from bwb that you can rarley find in stock I filled my syringe with water so I would not waste my precious juice,started putting it in then as it started running out I put my finger over the top of the smokeymizer where the bung is and boom it stopped running out the bottom if I removed my finger it would start pouring out again??So I srewed the empty smokeymizer in my tornado manual button model,and then wrapped some bounty the quicker picker upper around the air vents around the bottom of the smokeymizer and tornado connection and filled it up as fast as possible,held my finger over the top till I got the bung situated to go back in,removed my finger,replaced the bung and woo laah no leaks accept a little from the time it took me to get the bung back in!!Hopefully this will help alot of people out there only took me about 5 minutes to figure out because it took me about 3 cleaning all the nasty liquid up!!When in doubt figure it out!!