Having a color of Vanta Black prevents the subject from becoming invisible but rather make it transparent, due to the lack of brightness of the illumination of the gas. The process of becoming intangible still won't be affected.
It absorbs all types of energy, may it be magic, potential, kinetic, dimensional, or psionic.
While in contact with this anomaly, disables the subjects's supernatural capabilities, if there are any.
The pain given by this gas is omni-directional, and also includes extra-dimensional directions.
The anomaly can give immense amount of pain even to entities in non-physical state such as, astral, extra-dimensional, etc.
The gas' effect is non-fatal due to its ability to give pain even to the spirit or soul of the subject, making it unavailable for it to pass through afterlife.
It is to be noted that the anomaly still spreads while providing pain to the subjects in contact with it.
There is still no way for humans to protect themselves except enacting the special containment procedures.
Not inhaling it doesn't avoid the pain given by this gas. This will give pain, no matter how the subject physically contacted it.
To contain it, you must put it in a box-type room with Vanta Black color, hanged like a pendulum, with a 2nd layer with 200 vacuums with the same color, ready in case of containment breach from the 1st layer.
All layers of the containment facilities must be kept at freezing or below freezing temperature so that when containment breach occurs,