David Spain wrote:


From the article:

"We do not think it's the latter [a leak into the equipment rack], because
obviously there would be fairly conspicuous secondary indications if you had a
liter ball of urine floating around in the cabin," Alibaruho said. "We've had
none of those indications, no odors, no sign of water in and around that
rack."

They shouldn't be that confident; up on Mir they were doing repairs on
leaking glycol coolant pipes in the main module, and when they went to
take bubbles out of the plumbing after they were finished, noted that it
was taking an awful lot of glycol to get things topped up again. Later,
when he launched himself through the hatch into the unlighted Kvant
module, which they were using as a odds-and-ends storage area, Cosmonaut
Tsibliyev discovered where the missing glycol was...it was floating
right in front of him in a basketball-sized sphere that he went into
headfirst.
This led to nausea, skin irritation and really severe eye irritation
that lasted for days.

Pat