" The smell of roses when learning and sleeping

For the study, first author and student teacher Franziska Neumann conducted several experiments with 54 students from two 6th grade classes of a school in southern Germany.

The young participants from the test group were asked to place rose-scented incense sticks on their desks at home while learning English vocabulary and on the bedside table next to the bed at night. In another experiment, they also placed the incense sticks on the table next to them during a vocabulary test at school during an English test.

The results were compared with test results in which no incense sticks were used during one or more phases.

"The students showed a significant increase in learning success by about 30 percent if the incense sticks were used during both the learning and sleeping phases," says Neumann. The results also suggest that the additional use of the incense sticks during the vocabulary test promotes memory.

Findings are suitable for everyday use"

See:

https://www.news-medical.net/news/20200131/Fragrances-can-enhance-learning-during-sleep-shows-new-study.aspx