At press time, Esperanza guests did not have to pass a sniff test before checking out.

FORBES: The latest spa treatments are easy to digest.

The big test for checking whether animals recognise themselves involves painting a mark on their faces.

ECONOMIST: Self-recognition

While checking the results from the preliminary test, officials realized that their official dictionary listed alternative spellings for two of the words.

WSJ: Spelling Bee: 11 finalists compete for trophy

But checking levels involves a painful finger-prick test, which deters many from carrying out the test.

BBC: Pain 'prevents diabetics checking health'

According to court documents released on Tuesday in Colorado, Ebel had followed the conditions of his parole without incident since his release in January, checking in by phone every day and even once calling parole officials because no-one had requested a weekly drug test.

BBC: Suspect in prison chief murder slipped parole monitoring