Introduction
depression, coronavirus disease 2019, anxiety
CORONAVIRUS DISEASE 2019, POLAND
With the spread of the coronavirus disease 2019 (COVID-19) pandemic, people have been recommended to wear masks in various settings around the world [A recent study revealed notable disparities between Poland and China in mask-wearing and associated health outcomes. Specifically, far fewer Poles (35.0%) wore masks compared to the Chinese (96.8%), and they reported higher levels of anxiety, depression, and physical symptoms by COVID-19 [Although masks have been shown to be effective in reducing the spread of COVID-19 [The use of the aroma essential oils has potential to alleviate the stress caused by wearing masks. Aroma essential oils, a well-known non-invasive, natural compound [Therefore, in this study, a double-blind, randomized controlled trial was conducted to determine the stress-alleviating effects and safety of using aroma seals while wearing masks. Citrus is the one of the most popular scents in the world [