Some Christians often pronounce blood of Christ on something or somebody.

Just a minute ago I’ve got the following thought (now quite sure if it’s right):

Blood of Christ can be dangerous: (1Cor. 11:29-30) “For he who eats and drinks in an unworthy way eats and drinks judgment to himself, if he doesn’t discern the Lord’s body. For this cause many among you are weak and sickly, and not a few sleep.”

The above states that blood of Christ is dangerous for unbelievers.

So shall we pronounce blood of Christ on our unbelieving (not yet born again) friends? I think we should not, not to make then weak and sickly.