How do I disinfect my bedding and mattress of allergens?

MG asked:Apparently,I’ve picked up someallergens froma construction sight near mywork. I’ve beengetting particles onmyclothes formonths,andofcourse I leave myclothes onmybed,meaning thatalltheallergens havebeenliving inmysheets andmattress now.

I’ve broken out inhives and[...]