She entered the forest, and the darkness was crushing, suffocating her.
This time, it was suffocating him.
It is a colourless gas which possesses a characteristic suffocating odour.
At one and the same moment came the sound of an explosion, a whistle of splinters as from a breaking window frame, a suffocating smell of powder, and Prince Andrew started to one side, raising his arm, and fell on his chest.
Nature has provided several species of animals, birds and reptiles, to feed upon these insects, and various poisonous and suffocating compounds are used to destroy them, but with no great degree of success.