Hyperbole is rampant in this. If you’re really worried get some changeable activated carbon cartridge half face respirators and carry on...
Not saying you are wrong; just know your surroundings and atmosphere.
Activated carbon is not recommended in a strong acid atmosphere.
ActCarbon are short use “escape” filters.
And the exposed mucous membranes (eyes) outside the half-face with get burned at high acid levels.
With escape cartridges, close your eyes and move swiftly to a safe area.