We are living in the main floor of a house and another tenant living in the basement. This guy who live in the basement like to smoke marijuana. The landlord told this guys not to smoke inside the house. The problem is from time to time we still smell something and we thought it's because that guy smoking inside, that guy however, swore to us that he no longer smoking inside, he did however, wrap the weed inside. Therefore, we conclude, the smell is from the weed that he store inside his room. My question, is it harmful to smell the weed even though it is not being smoke? Thanks!!