Something is cooking...

[BIAD]

Mr. G. Here.
YES!
This would have been my choice of Contact Areas.
A Museum or Public Bathroom is better than a Restaurant.
In a restaurant, I've noticed that someone is always looking or watching people coming and going.
You'd have to have paid for your meal (cash) and then made contact with your victim before leaving, that is Awkward, because if you trip your victim or brush against them ruffly, someone will take notice and stare.
Also, most cash registers have cameras, not an ideal place.

A jogging area or dog park, crowded street while window shopping even a newspaper or magazine stand.

So the 'door-handle' is not a good idea, then! Which -when protecting a spy, would probably be on cctv.
The notion of a perfume spray seems ridiculous too.