Basically, just go with anything black and rubber, with two circular eyepieces.
You can often luck out and find one of those at a local milsurp store.
I'm fairly confident there are a plethora of examples from like Rammstein or Kaisers Orchestra music videos, or even SlipKnot.
Ah. But I forget who I am talking to:
You already own a gas mask.
I'm sure the one you have would do fine, lol.
(though maybe balance out its large monocular face piece with exaggerated or substantial shoulder padding on the dress?)
But if you insist on another one, Id recommend something like the old Soviet GP-5:

Apparently these are not reproductions and are actually real surplus... don't try using them as an actual CBRN gasmask without restoring and testing it, but as far as fashion goes?
Very fashionable, imo, this basic design seems to be a staple of uh... europunk/euroalt? I'm not really sure what the genre or scene names would be, but I've seen this kind of design in many 'sexy lady with gas mask' style videos, lol.
I'm guessing its because the kind of 'noodle nose' thing is evocative of the stereotypical 'Plauge Doctor' mask.
You can always just layer over the eyepieces with translucent plastic or even just carefully layered and fixed, colored saran wrap, lol.
And there are many other slightly different but generally design-element-similar masks.