Stored contents of gas/liquid reservoir gets falsely exposed to outside gasses, opening an exploit for easy disinfection of gases and fluids.
See the video where this is demonstrated (bookmarked at the 3:00 mark point where it's shown):
The reservoirs should be gas tight, shouldn't they?
Steps to Reproduce
Build a gas or liquid reservoir, pipe in germ loaded content, surround the reservoir with chlorine => germs in the stored contents die as if in chlorine.
This issue has not been confirmed by a developer yet.