Although being porous to a hypospray makes it useless as a spacesuit lol (I know it's just tv)
Except not. The hypospray is necessarily a high pressure device: it can penetrate skin, after all. And skin is a perfectly good spacesuit as long as one doesn't mind eventual necrosis; a suit with the pressure-resistant qualities of human skin would probably be pretty close to ideal.
By the same token, a determined space cloud could well make its way into an airtight spacecraft as in "Obsession". Just as Futurama put it:
Fry: "How many atmospheres can the ship stand?"
Prof. Farnsworth: "Well, its a spaceship, so I'd say anywhere between zero and one."
Timo Saloniemi