Drawback of Lithium-Ion, page-56

"The RedFlow ZBMs do not under their normal operating conditions vent any gases and it's only under extremely elevated temperatures that there is any chance of a 'tiny' quantity of bromine gas being liberated from the ZBMs electrolyte containment vessel and that is the reason for their design's built-in carbon filled catch-can which then captures any such small gas emission, containing and neutralizing it safely, and thus preventing it's venting to the atmosphere, unlike all Lead Acid installations which offer no such 'care' for our environment"

I dispute that as well. The ZBM can operate up to 50 degrees and then shuts off automatically.
Pretty sure there would be no gas leaks with temp up to 50 degrees.

IMO gas fumes from the ZBM are released in the last stage of being fully charged.

From experience, ZBM,s being charged overnight in a locked room. When entering the room in the morning, u can smell the gas- staff complained and the carbon canisters were put in.

Entering the room in the morning without ZBM,s being charged overnight , there was no smell.

This suggest strongly that like lead acid batteries the last stage of fully charging is very gaseous.

It is every persons responsibility to care for the health of yourself and others.
Like advising children of the dangers of 240v. Every person has works with a 240v appliance- yet the person advising of the hazard is not called a fear monger or has mental problems.

This is normal practice to bring peoples awareness of the nature of a potential hazard.