No it sticks around and permeates
I am a little too young for this, however it came about that I had to test a gas mask (i e NOT during the WW2 but later) so we all trooped (haha) into the Nissen Hut where the ampoule was broken we were wearing our gas masks etc.
Then you had to go outside take off the mask and bawl your name, and got a lung full of the stuff
then in the car on the journey back, it came off your clothes
ON the srength of this, I have no doubt that it gets through zippers etc.