Olfactory suppression

Olfactory suppression (also known as anosmia) is the experience of smells becoming significantly vaguer, weaker, and less noticeable than they would be during everyday sobriety.

Olfactory suppression is often accompanied by other coinciding effects, such as tactile suppression and gustatory suppression. It is most commonly induced under the influence of moderate dosages of dissociative compounds, such as ketamine, PCP, and DXM.