I had a similar experience trying a little V2 Coffee. The owner of the juice liked it a lot, so probably nothing wrong with it, but I found it too much like burnt coil and it seemed to take a week to fully eradicate. If I ever try coffee again, it will be after liking it in someone else's hardware. Also not too crazy about Goodejuice Wrangler Light because its main flavor is smoky. It doesn't taste bad at all, but my alarm bells are going off continuously.