Has anyone been advised about whether it's safe to breathe olbas oil? I'm 14 wks and have a stinking cold and blocked sinuses. Info online is conflicting with some advice saying it's 'not safe' - others saying it's fine. Can't tell if 'not safe' really means there is a risk of something in particular, or if it just means no-one's done a large randomised control trial so we have to be ridiculously over cautious... Will call my mw too but wonder what others have been advised. Thanks