Let me start off by saying this is not a healing bomb.
So we all know that the primary use of bombs like the Shivermist, and to a lesser extent the Venom Veiler and Stagger Storm, is defensive. The status effects stop, reduce, or slow down the enemy's ability to do damage to us.
Thus the idea for a "haze of protection" for allies. Basically any ally standing in the mist would gain an armour and shield buff, reducing the damage received from enemy attacks by some percentage.
Venom Veiler.