smokescreen

smoke screen or smoke·screen (smkskrn)

n.

1. A mass of dense artificial smoke used to conceal military areas or operations from an enemy.

2. An action or statement used to conceal actual plans or intentions.

Thesaurus

Noun	1.	smokescreen - (military) screen consisting of a cloud of smoke that obscures movements smoke screen screen - a protective covering consisting of netting; can be mounted in a frame; "they put screens in the windows for protection against insects"; "a metal screen protected the observers" armed forces, armed services, military, military machine, war machine - the military forces of a nation; "their military is the largest in the region"; "the military machine is the same one we faced in 1991 but now it is weaker"
	2.	smokescreen - an action intended to conceal or confuse or obscure; "requesting new powers of surveillance is just a smokescreen to hide their failures" smoke screen concealing, hiding, concealment - the activity of keeping something secret

Translations

smokescreen [ˈsməʊkskriːn] N (lit, fig) → cortina f de humo
to put up a smokescreen (fig) → entenebrecer un asunto, enmarañar un asunto(para despistar a la gente)