She is making that to simple. As each person takes a breath so much CO2 plus other things are taken into the lungs. Her brother is breathing in all the waste of the world not only weed smoke. In fact weed smoke should be the least of her worries. With the CO2 levels on earth rising and the pollution from cars, factories etc, he is breathing toxic waste from far away. But feel safe for now, the amount is so little that it should not harm him.

I wouldn't make a point of the Second-hand smoke because yes it does harm a person. My older sister has never smoked in her life (she's not the type of person...trust me here) anyways, she had to go to the doctor a few months ago. The doctor said that she needed to stop smoking. She tryed to tell him she never but he would not believe her. She had smokers lungs. When she explained the siduation to him that for all the years that we grew up both our parents have been smoking and in a large amount. They would not always try and avoid us while they smoked because, like come here seem to think, they didn't think they were doing damage. My aunt who spends much time here smokes as well. The three major people we grew up with smoked. (this does not include friends and other family members) She, my second oldest brother and I have grown up around this and our lungs have been affected. If a test was done on me and my brother (who now smokes, but before hand) i'm sure the same results would be found. I as well never smoked a day in my life, weed is a different thing. But before all that my lungs would still be a smoker lungs. Second hand smoke, no matter what anyone says, no matter the "tests" they find or the "proof", exists. Wither you choose to believe it, is another story.
MudFu Reviewed by MudFu on . Stubborn people... The gauntlet has been thrown down before the Penguin! A friend of mine is a very against-marijuana person. I proved all of the facts to her...but...she came up with something I hadn't thought about... She said "Next time you smoke, think about my little brother's lungs, because that smoke you put in the air, well some tiny part of it will eventually get to his lungs. And with the other hundreds of millions of you smokers...you guys are killing him..." WHAT THE FUCK AM I TO SAY TO THAT!? Rating: 5