As dead flies bring a stench to the perfumer’s oil, so a little folly outweighs wisdom and honor.
KJV
Dead flies cause the ointment of the apothecary to send forth a stinking savour: [so doth] a little folly him that is in reputation for wisdom [and] honour.
ASV
Dead flies cause the oil of the perfumer to send forth an evil odor; so doth a little folly outweigh wisdom and honor.