Should i charge him $?

Alright my husband's sister and family moved into our house. Financial issues and other things.

My husband and i smoke out back now. Out of respect for the kids being around.

Well one night the hubs and i, were out back smoking and my SIL husband came out. He smoke a little bit with us and joked about not letting the "wife" know about him smoking.

Well this was month ago and now every so often he would hit me up on FB and ask for little nug. So he would head upstairs and grab a nug from me and smoke on our patio.

Sometimes he would message my husband to do same while i was at work. Tonight we were both out on our patio and he showed up to smoke.

Well he left after we we're done smoking and i brought up about his sister's husband. I think we should charge him money and my husband thinks it's not a big deal.

What do you thunk we should do? He is down for everyone's opinions!