The crowded conference room was so stuffy that several attendees felt they might suffocate.

擁擠的會議室悶得讓好幾位與會者覺得快要窒息了。

Please keep the plastic packaging away from children, as it could cause them to suffocate.

請將塑膠包裝放在兒童拿不到的地方，以免造成窒息。

Passengers complained they were suffocating because the train's air conditioning broke down during the delay.

列車誤點期間空調故障，乘客抱怨快要喘不過氣來。