I had a really wierd dream about this the other night, we were at my friends and went in his attic the weird part is his house does't have one. In the dream it was real nice and we went and smoked there then played a PS3 in a bachelor pad like room. His parents came up and just brought us some movies and were like when did this get here they then left without noticing the smell. The point of this is if you have a nice attic it's safe to do.