No... You couldn't of got any thc from his second hand. I would start practicing dilution, you've got some time so test yourself periodically. All you need to know is in the Dilution Sticky at the top of the forum. Make sure you follow it to a T the morning of the test. Your also going to want to load up on creatine starting 3 days before the test. Red meat is a great source of creatine if you cant purchase the supplement. There is a link in the dilution sticky on creatine loading so i suggest you study it.