二手煙 的英文怎麼說?

[1] second-hand smoke[2] second-hand tobacco smoke[3] second-hand cigarette smoke

二手煙 = second-hand smoke = second-hand tobacco smoke = second-hand cigarette smoke

second-hand tobacco smoke 是最完整的英文，很明確的指菸草，但 second-hand smoke 也行，因為大家都懂是指二手煙。

second-hand smoke 也可用在其他的物質，例如:

二手大麻煙 = second hand marijuana smoke = second hand weed smoke