It might be that he has been sent a durian

"The edible flesh emits a distinctive odour, that is strong and penetrating even when the husk is intact. Some people regard the durian as pleasantly fragrant; others find the aroma overpowering and revolting. The smell evokes reactions from deep appreciation to intense disgust, and has been described variously as almonds, rotten onions, turpentine, and gym socks. The odour has led to the fruit's banishment from certain hotels and public transportation in southeast Asia."

It's odour has also been likened to that of rotting flesh.