When a person's mere proximity is enough to make you feel like your being repeatedly punched in the sinuses by their overbearing perfume/cologne. Olfactory assaulters have no sense of smell therefore they are immune to their own chemical warfare.
Do you like my perfume?
Yes it's intoxicating, and by intoxicating I mean, I feel like I'm two drinks in and am being waterboarded with gasoline. Please end this olfactory assault. I surrender and will tell you anything you need to know. And I'll use my underwear as the white flag.