Just wanted to add, when I first got the Aromamizer, it was a real pain to clean. Tried boiling it, soaking and scrubbing with detergent a few times but couldn't get it clean. Eventually dismantled it, removed all o-rings and soaked it in isopropyl alcohol for a while. Finally got the machine oil taste & smell off. Before cleaning, I could smell the oil on the tank without vaping it, it just stank.