I could imagine that depending on the purpose of the mask, one might simply live with the fact that it'd restrict the wearer's ability to speak (or maybe you'd use a throat microphone, although I don't know how much mouth/muzzle movement those things require); also, as far as filters are concerned, I'd imagine that it'd be shifted along the side of the mask (or maybe split into two filters on both sides, to provide better balance) and that special care would be taken to make it as lightweight as possible.
But the fur would definitely be a problem, yes. I wonder whether furs who'd regularly wear gasmasks (like firefighters or soldiers, maybe) would shave part of their necks to make sure that the mask would come in contact with the actual skin so it'd be airtight... but you'd still need a different mask shape that covers more than the face even in that case.
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I could imagine that depending on the purpose of the mask, one might simply live with the fact that it'd restrict the wearer's ability to speak (or maybe you'd use a throat microphone, although I don't know how much mouth/muzzle movement those things require); also, as far as filters are concerned, I'd imagine that it'd be shifted along the side of the mask (or maybe split into two filters on both sides, to provide better balance) and that special care would be taken to make it as lightweight as possible.
But the fur would definitely be a problem, yes. I wonder whether furs who'd regularly wear gasmasks (like firefighters or soldiers, maybe) would shave part of their necks to make sure that the mask would come in contact with the actual skin so it'd be airtight... but you'd still need a different mask shape that covers more than the face even in that case.