airless
close
fuggy
stuffy
unaerated
unaired
unoxygenated
unvented
blank
blind
blind-alley
breathless
breezeless
cecal
choked
choked off
closed
constricted
contracted
dead
dead-end
ill-ventilated
oppressive
shut
squeezed shut
stifling
strangulated
suffocating
unopen
unopened
windless