Smoke alarms can be set off by smoke from cigarettes, cooking, and fireplaces.香烟、烹调的油烟，以及壁炉的烟都可以触发烟雾报警器。This pipe vents smoke from the kitchen.这管子是供厨房排油烟用的。Diesel exhaust contains a lot of soot.柴油机的废气含有许多油烟。Cooking fumes may activate the alarm.烹调时的油烟可能会触发警报器。