Sick Clouds

[leeholmes]

Hi Everyone, I'm new to making my own Juice and I've been mixing up single flavours for the last 3weeks, After I've let steep my Mix & Flavour seem spot on but the clouds I exhale smell like SICK... I mix at 20% Flavour 50/50 @ 6MG... Can anyone tell me why this is.... Thanks

[charliehorse]

You don't say which flavours or brands you have been mixing but it may be that the flavours have Butyric Acid in them.
It is apparently used as a substitute for diacetyl/acetoin/acetyl proprionyl to give a buttery flavour in low amounts but can give that vomit taste/smell if you overdo it.