One should not stir the shit as it will be even more stinking.
More Hungarian Proverbs:
Every man kindles the fire below his own pot.Hungarian
You haven't yet caught the bird, still you are already plucking her.
Hungarian
He shoots at sparrows with a, high calibre, gun.
Hungarian
Cleanliness is half-health.
Hungarian
Every man should practise only his trade.
Hungarian
He turns in his grave.
Hungarian