I made a mechanics soap out of M&P. I put fine pumice and fullers earth in it. It worked really well but doesn't really have a smell to it. I read here somewhere that an Orange EO also helps cut the grease, but I'm more interested in a good smell now that my recipe removes the grease. Any suggestions on what I should use? Should I put an FO in this or an EO, and what kinds would work best? Thank you!