There was also a distinct smell of hamburgers, at least it seemed so to me.

There was a distinct smell, a fug of old damp overcoats, of fried breakfasts, of decades of grinding poverty.

There was a distinct smell of diesel fuel at deck level, possibly due to her low-set twin funnels.

The food often has quite a distinct smell.

Furthermore, drosophila trained to avoid one deuterated odorant also avoided other deuterated odorants, chemically unrelated, indicating that the deuterated bond itself had a distinct smell.