A recent study has shown that odor plays a role in learning, in particular, in improving exam performance. In the report, published in the journal Scientific Reports, lead author Jurgen Kornmeier [.]
However, some people have also woken up to discover that their usual beloved coffee odor has been distorted and now smells like garbage or rotting meat, a condition known as parosmia. Others smell cigarette smoke, for example, when no odor source is present, a condition called phantosmia.
It is now widely known that COVID-19 is associated with the transient or long-term loss of olfaction (the sense of smell) but the mechanisms remain obscure.