yesterday while working in the muddy shite hole called our building site the rain got the better of me so i ended up in the tea hut. some scroats were in there smoking on a fat one, i didnt realise at first but after a few mins it dawned on me that i was passive smoking it with them so i left. Now im a bit concerened that it might show up on a CDT??? I didnt ask them to put it out because one off them is an ex double hard 2 para guy What should i do??