But actually, the ISS is going to be, what, 22 years old then, and
that's quite old for orbiting facilities that are inhabited by people.
People bring all kinds of mess with them, and that mess finds all the
nooks and crannies in the space station and lives there. I gather the
funk in the ISS is becoming pretty bad, already. It isn't likely to
get much better in the next nine years.

Geez, just open a window and air the place out.