無孔不入（無孔不入）　

◎ 無孔不入 wúkǒng-bùrù

[(of odours,ideas,etc.)be all-pervasive;make one‘s way into every nook and coners;seize every opportunity to do evil] 沒有什么孔隙不鉆入的。比喻消極的東西易于滲透、侵入。亦指人善于鉆營,有隙就乘機(jī)營求