How do you get rid of the previous flavor's smell and taste from your tanks? In my example, I have an Aspire Nautilus Mini and used MEL's "Blue Voodoo" e-liquid (blueberry fruit) in it. I then took it apart, rinse and soaked it in hot water for about half an hour. I even REPLACED the glass portion of it with a brand new "glass with T armor" and replaced the coil with a brand new BVC coil. Then I put in MEL's HFC e-liquid (tobacco flavor) in it. Whenever I vape I can still taste/smell the Blue Voodoo in it.