Synonyms and related words :
airless, breathless, breezeless, censorship, close, crackdown, crushing, extinguishment, humid, ill-ventilated, muggy, nose-piercing, oppressive, penetrating, pungent, putting down, quashing, quelling, quenching, reeking, repression, sharp, smashing, smothering, smudgy, squashing, squelching, sticky, stifling, strangling, strong, strong-scented, strong-smelling, stuffy, subdual, sultry, suppression, throttling, unvented, unventilated, windless