Rank reeds and lush, slimy water-plants sent an odour of decay and a heavy miasmatic vapour onto our faces, while a false step plunged us more than once thigh-deep into the dark, quivering mire, which shook for yards in soft undulations around our feet.
There are no more uses of "miasma" in the book.
Show samples from other sources
Jem, sitting beside him, was squint-eyed, miasmal, and mute, as he always was in the morning.
Harper Lee -- Go Set a Watchman
The red miasma swam before her eyes; her stomach churned in ITs rhythm.