eau d'or
Heavy, headache-causing perfume smell that allows to follow the person that wears it without getting closer than 10-30 feet (up to 10 m). Also triggers conditioned response based on unvolunatry movement of fingers trying to ignite the lighter.
I saw her/him walking from the distance. My eyes clenched on her/his body movements. As I was getting closer to open my mouth to start conversation something punched me straight into my face. Her/his eau d'or was so strong that it knocked my other senses off for couple of seconds. Exactly for her/him to pass me and mix into the crowd. Ten minutes later I still couldn't think of anything else.