Sounds like you have some fusel alcohol there. Hot solventy like? Its not to good for you and can give you headaches. Comes from to warm of fermentation. From what I've read and experienced they will eventually change over to the good stuff. It can take a little while though. Unless you are in a big rush for the container I would let it set a couple of weeks or bottle it. At over 6% you won't go through it very fast anyway.