In a closed space, with random people = I hold.
In a closed space, alone (or with GF) = I don't hold.
In a open space, with random people, without wind = I hold.
In a open space, with random people, when it's windy = I don't hold.
In a open space, alone, whitout wind = I hold, because the thing takes time to leave the general area and someone may come.
In a open space, alone, with wind = I don't hold.