Cortana may refer to: 1  Cortana (software), Microsoft personal assistant software. 2  Cortana (Halo), a fictional artificial intelligence character. 3  Cortana (gastropod), a gastropod genus.  Cortana, or Curtana, a ceremonial sword used in the coronation of British 1  monarchs. Cortana Mall, Baton Rouge, Louisiana,  USA.
The length of time that nicotine stays in the body and cotinine can be a reliable indicator of nicotine use depends on the amount of tobacco smoked, the number of years smoking tobacco, and the type of nicotine test performed. It can be as short as 2 days, or as long as 3 months.
A regular urine sample is enough to show the presence of nicotine in urine. Even in case of passive smokers, nicotine in the urine can be detected for 20-25 days at the maximum. Nicotine is only harmful for human in higher dose such as 30 to 60 milligram. However, it is not harmful when it is present in less quantity. As mentioned above amount of nicotine in a cigarette stick does not cause any harm but causes addiction.