It would probably be safe to use it as a disinfectant for swabbing the area where you intend to lance a boil, blister or abscess, and use an antibiotic afterward, not the alcohol. That high of an alcohol content might do damage to raw tissue.

And it could be used to disinfect contaminated tools. If an 80% isopropyl alcohol soak will do it, 190-proof certainly should!

Sue