Sorry, but it doesn't work that way. If it smells like weed, then it's weed, lol.... it would help to know if ur gorwing inside or outside, and ur lighting schedule if indoors. Either way, it does take a somewhat trained eye to spot what ur lookin for to determine the sex of the plant. To put it as simple as i know, ur lookin for white hairs that come in pairs, meaning it's a female plant, OR seed-like balls, meaning it's a boy.