I went to visit someone in Wheatfield prison a few days ago, got through all the security steps, except the last one when the dog smelled hash on me, and so, after a second search, I got the visit, but it had to be a screened visit. I explained my ocupation to which there seemed to be an understanding. I had visited the same prisoner when he was in the Midlands prison without any problem. I had finished work about 5 hours previously, and can't remember the last timed I smoke hash, must be several years ago. No one smokes in the car, can it transfer from clothes to clothes without contact?