Grinding or not, I'd avoid all circumstances where unheated weed can be handled.anyhow after lots of tests the docs concluded it was the weedz so he no longer grinds it down like that.
And if edibles are your thing, read up on "decarboxylation" - lots of websites describe how to do it. Grind the fuck out of the weed, spread it out on parchment paper on a baking sheet, and bake it for a while. It makes it more potent (huge bonus), and the heat should hopefully neutralize whatever ugly compound is causing the allergy.