after a few weeks you can't smell it anymore because you desensitize. >> last year scientists put her perfume hypothesis to a test forecasting how trump's lies might affect the american psyche over time. >> we made a prediction that we're going to see the average amount of falsehoods increase and at the same time we'll see less reaction from the public and inner circle, and it turns out that that is exactly what happened, as dishonesty gradually increases the reaction of the public actually decreases. >> according to a recent poll, while most americans trust the news media over president trump when it comes to who's telling the truth about important issues, 3/4 of republicans trust president trump over the news meade yanchts there is an echo chamber. folks who are not necessarily