Synonyms and related words :
airless, breathless, breezeless, choking, close, constrictive, contrary, counterproductive, crosswise, extinguishment, hindering, hindersome, humid, ill-ventilated, in the way, inhibiting, inhibitive, interrupting, interruptive, muggy, obstructing, obstructive, obstruent, occlusive, oppressive, overpowering, quashing, quenching, repressive, restrictive, smothering, smudgy, squashing, squelching, sticky, strangling, stuffy, suffocating, sultry, suppression, suppressive, troublesome, unbearable, unendurable, unvented, unventilated, windless