My husband and I are both medical users. We smoke and vape every day. Our two adult sons live with us and do not use cannabis. We do not take any special precautions to "shield" them from second-hand vapor/smoke. They both test negative. You don't need to worry! - Granny:hippy:

PS- In today's economy, which is only going to get worse for a while, you will see more and more "intergenerational" families. It is often far cheaper to rent one big house than 2 smaller ones. It is no longer safe to assume that someone is a minor when they mention living with the parents.

My family is a good example- we could all live in absolute poverty, or, by combining resources, live a relatively comfortable lifestyle. Since we get along, it's a "no brainer". We share a large 4 bedroom mobile. It works for us. - Granny:hippy: