As bugs, stink bugs suck. They suck the juices out of plants. And then they stink — sort of like rotting apples but more repulsive.
We have our native brown stink bug — and I think it is going to be a good (in other words, bad) winter for them invading the house.
Now a Chinese stink bug is working its way across the country, as shown in this website devoted to the brown marmorated stink bug. Read all about 'em.
There is even a section for organic farmers.