airless
adjective
[ ˈɛːləs ]
• stuffy; not ventilated.
• "a dusty, airless basement"
Similar:
stuffy,
close,
stifling,
suffocating,
breathless,
sultry,
muggy,
fuggy,
stale,
humid,
oppressive,
unventilated,
badly/poorly ventilated,
smoky,
claggy,
Opposite:
airy,
ventilated,