Mothproofed Wool Blankets from the 50’s—Are They Safe?

have a few 100% wool blankets from Ayers in Quebec that I inherited a long time ago that date back to the 50's or 60's. The tag says: Moth proof. I really loved these blankets as it is so hard nowadays to get such heavy and warm wool blankets (or if you do, you might have to pay 300$). Do you think they are still toxic, even after 50+ years to have in our home ?