You can eat and smoke things in any MK suits. You can't if you're wearing the newer MCP suits or underwear. This is a serious flaw that should be fixed.
How can we fix this issue?
Are you sure? I thought they had the same helmet. Unless it's a feature of the entire suit, the MK being more bulky allowing it to have something like a mini-airlock.
If there's no better solution, combine a blender and a pump and hook it up in the suit's water supply or medication intake port.
Actually, that's the only way you can eat in Mk suits; the regular suit-feed supplies? Yeah, food paste.
...Well, theoretically (with great trouble) you could (maybe) raise your hand to the face and eat something that way. Except then your food would have to be stuffed insideyour suit with you... and that's neither very healthy nor quite efficient (i.e., at all). I don't think anyone has ever done that.
And yes, the helmet is literally the same, actually. (Yes, I used 'literally' correctly here - it's exact same. By design.
) It's the only part of MCP-suits that can depressurise... and that's because, well, it's quite hard to make it work otherwise, and then something that penetrated your helmet has likely already reduced your brain to paste or at least given you a
vicious concussion in the process, thus taking you out of fight. Try not to catch bullets with your heads, people - that's what limbs are for, especially knowing our GM's not-so-secret fetish of mangling them.
Smoking though? Well, that's not suit-supported action, so that ability is lost with MCP suits, unfortunately. Clearly, this needs a clever engineering solution. Maybe we could run a tinker contest?..