if you can find it to purchase, i've had good experience with liquid chlorophyll with peppermint as an internal deodorant...
and i haven't tried it for this, but maybe capsules of charcoal would be good for internal deodorizing... i don't know if you can find it to purchase, but the best brand i've found is "nature's way" activated charcoal - this might sound so silly, but, their capsules are so shiny and their charcoal seems somehow CLEANER than other brands of charcoal, even though you'd think charcoal is always dirty, lol :)
otherwise, if you can, try to do your Liver Flush when you're home alone ...and/or buy a bottle of - all natural of course :) - air freshener spray :)