Formalin-coated conscience

A few days back I bought some mangoes from a roadside stall. Being asked the vendor informed me that the name of the mangoe is 'Amropali' and they taste good. I also knew that 'Amropali' tastes delicious. But while eating the mangoes at home, it tasted sour and bitter.  
I realised that green mangoes were ripened untimely by using harmful chemicals. Such an unethical act is committed by traders to maximise profit. Nothing hurts their conscience since the conscience of the unscrupulous and greedy people are coated by formalin.
Zonaed Emran
Dhaka