While looking for an authentic "hyssop" like used in bilbical times, I read that perhaps this one was very similar. Whether it is or not, I really, really like the scent and it seems to work very well to help with my tendency to sinus infections. I would highly recommend trying it!
I feel like I've developed a spectrum of expectations for essential oils that I haven't smelled ever, but decided to purchase online because I have little will power.
On one side of the spectrum: you have 'huh.' Clary sage is the biggest 'huh.' I have it, I use it when I can, but I don't get it. It's too sharp and funky. This also happens with poor quality lavender.
On the other side of the spectrum: you have 'the sublime': Good quality lavender, eucalyptus, some types of cedar, rose.
Wild marjoram is genuinely on the way to sublime. None of the funk of my worst nemesis, clary sage. It's fresh and green and lovely.