Smudge Pot: Oil-burning heaters used to prevent or reduce frost damage in orchards and vineyards. Typically consisting of a wide base topped by a chimney, smudge pots may be lit when frost threatens. They offer some protection by creating air currents that can disrupt settled colder air at ground level. Due to their consumption of oil and smoke production, as well as labor requirements, use of smudge pots is in decline in favor of other frost-protection methods such as wind machines and aspersion.

烟熏炉： 用于预防或减少果园和葡萄园冻害的燃油加热器。通常由一个宽大的基底和上面的烟囱组成，当有霜冻威胁的时候烟熏炉就会被点燃。它通过创造气流，打破沉积在地面上的冷空气来起保护作用。使用烟熏炉会耗费燃油，产生烟雾，还需要人力，因此，烟熏炉的使用率下降，而采用其他防冻害法，比如风力机和洒水。