sickening

oksettava, ällöttävä, yököttävä Causing sickness or disgust.
puhekieltä amazing Amazing, fantastic.
(present participle of)
The act of making somebody sick.
2010, Greg A. Marley, Chanterelle Dreams, Amanita Nightmares

In the Northeast, one porcini look-alike has been implicated in several sickenings. It is Boletus huronensis, and though some guides call it edible, there have been a few cases of people becoming sickened following a meal of this mushroom.