The nose generally stands for the olfactory sense. Emoji indicates that something has a strong scent. Depending on the context, this may be nice or unpleasant.
The nose: Medium-dark Skin Tone emoji was introduced in 2010 and released as part of the Unicode 11.0 standard. This emoji can be found under the people and body
category. Because the nose: Medium-dark Skin Tone emoji has been around for quite some time, it should display correctly in the majority of operating systems.