Will weed show in your system for hair test if you were in the same room as it,i haven't done i

Hair test is usually a 9 month growth max. The root is most important in the test.

Will weed show in your system for hair test if you were in the same room as it,i haven't done it in 13 years

you should be clean then, no worries

Will weed show in your system for hair test if you were in the same room as it,i haven't done it in 13 years

Not unless the room was closed up and the smoke was so heavy that you were inhaling actual amounts of concentrated smoke it wouldn't. It's not like minute traces can enter your body through your pores or anything.

Will weed show in your system for hair test if you were in the same room as it,i haven't done it in 13 years

No it will not show up if you have been in the room with it.. a hair test goes back only about 90 days to nine months, so if it has been 13 years since you have smoked you should be fine..