There used to be a good solution to the problem in beta, which they inexplicably nerfed in live, and I have to say I'm kind of mad about it.
In beta you could send in stuff that was immune to the clouds to disarm the traps, or alternatively you could throw flame sources, like candles, into the traps, and that would keep them burning and not spreading. Neither of those works anymore - the disarm DC is now like 30 or something utterly stupid for a mission you'll likely be on at level 3-4 - and the flame stuff is now super-buggy and mostly doesn't work, with the gas coming back near-instantly and not always igniting even when it touches a naked flame. So instead of you have to dip into your camp's barrel/box stock (ugh) and throw that on top of the vents for a much dumber and less interesting solution but one that actually works.