Ecclesiastes 10:1

Dead flies make the perfumer’s ointment give off a stench ; so a little folly outweighs wisdom and honor .

As dead flies give perfume a bad smell, so a little folly outweighs wisdom and honor.

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.