Just like our response to Kaneki, in the end it'll mostly be up to you. The virus is magical rather than physical, but that doesn't mean Wade isn't immune to it. If you think his healing factor would negate it, that's fine with us!

As for his blood, it could be used as a repellent, but it would need to be used very liberally if applied to anyone else. Think 'sprayed with a hose' rather than 'spritzed with perfume'.