如堕烟雾

as if degenerating into smoke (idiom); ignorant and unable to see where things are heading

as / as if / such as

to fall / to degenerate

cigarette or pipe tobacco / CL:根[gen1] / smoke / mist / vapour / CL:縷|缕[lü3] / tobacco plant / (of the eyes) to be irritated by smoke

smoke / mist / vapor / smog / fumes

fog / mist / CL:場|场[chang2],陣|阵[zhen4]