Following are a number of back-translations as well as a sample translation for translators of Ecclesiastes 10:1:

• Kupsabiny: “Like when a fly that has died makes a sweet smelling oil to smell bad, so can a small foolishness cover/put a lid on wisdom.” (Source: Kupsabiny Back Translation)
• Newari: “Just as a dead fly will cause fragrant perfume to stink,
  in just the same way a little foolish deed will nullify a work of wisdom and honor.” (Source: Newari Back Translation)
• Hiligaynon: “As dead flies can-cause-bad-smell to a perfume, a little foolishness/craziness can-destroy wisdom and honor.” (Source: Hiligaynon Back Translation)
• English: “A few dead flies in a bottle of perfume cause all the perfume to stink.
  Similarly , a small amount of acting foolishly can have a greater effect than acting wisely.” (Source: Translation for Translators)