def: (1) the smell of corruption and failure that permeates anything touched by Donald Trump (2) the smell of death (3) the smell of Ivanka's 13-year-old daddy-spooged anus
see: "Everything touched by Trump dies" a NYT #1 best-seller book by a noted Republican strategist (and genius), Rick Wilson.
example of usage: "I was doing well investing in a promising goldmine prospect in Alaska, then Trump got involved and the whiff of Trumpstank scared-off all the investors! Now my investment and 401k are worthless!"
portmanteau formed from trump + petard (in the sense of Shakespeare's "hoist with his own petard')
def: a linguistic "reveal" of pathological liars (like Trump), wherein a statement is "exploded" (revealed to be completely devoid of veracity) by an immediately following conflicting/contradictory statement.
example of usage: "In every public speech, the president careers from one trumpetard to the next!"